New paper: NJP

Quantum Otto engines at relativistic energies

Nathan M Myers, Obinna Abah, and Sebastian Deffner

Relativistic quantum systems exhibit unique features not present at lower energies, such as the existence of both particles and antiparticles, and restrictions placed on the system dynamics due to the light cone. In order to understand what impact these relativistic phenomena have on the performance of quantum thermal machines we analyze a quantum Otto engine with a working medium of a relativistic particle in an oscillator potential evolving under Dirac or Klein–Gordon dynamics. We examine both the low-temperature, non-relativistic and high-temperature, relativistic limits of the dynamics and find that the relativistic engine operates with higher work output, but an effectively reduced compression ratio, leading to significantly smaller efficiency than its non-relativistic counterpart. Using the framework of endoreversible thermodynamics we determine the efficiency at maximum power of the relativistic engine, and find it to be equivalent to the Curzon–Ahlborn efficiency.

]]> Quantum Otto engines at relativistic energies Nathan M Myers, Obinna Abah, and Sebastian Deffner Relativistic quantum systems exhibit unique features not present at lower energies, such as the... https://iopscience.iop.org/article/10.1088/1367-2630/ac2756/meta https://beta.my.umbc.edu/api/v0/pixel/news/113349/guest@my.umbc.edu/a02bf31261da594310d75da2fd9e9ff6/api/pixel Quantum Thermodynamics https://beta.my.umbc.edu/groups/quthermo https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/original.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxlarge.png?1502988446 https://assets4-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xlarge.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/large.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/medium.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/small.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxsmall.png?1502988446 Quantum Thermodynamics 0 0 true Sat, 16 Oct 2021 00:04:25 -0400 Sat, 16 Oct 2021 00:07:24 -0400 Congratulations to Dr. Pierre Nazé!! On Thursday, July 29, 2021 Pierre defended his dissertation. After a fantastic talk he passed with flying colors and he shall henceforth be known as Dr. Nazé! ]]> On Thursday, July 29, 2021 Pierre defended his dissertation. After a fantastic talk he passed with flying colors and he shall henceforth be known as Dr. Nazé! https://beta.my.umbc.edu/api/v0/pixel/news/111325/guest@my.umbc.edu/f9bec9466b83e6717d1826aef7e0f430/api/pixel Quantum Thermodynamics https://beta.my.umbc.edu/groups/quthermo https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/original.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxlarge.png?1502988446 https://assets4-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xlarge.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/large.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/medium.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/small.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxsmall.png?1502988446 Quantum Thermodynamics 0 0 true Thu, 29 Jul 2021 18:09:38 -0400 New graduate students Effective immediately two new graduate students have joined the group:

Bhavesh Valecha

Bhavesh will be joining the Physics Graduate Program at UMBC in August 2021. He holds a Master of Science from the Indian Institute of Science Education and Research (IISER) Pune, India. In his master thesis he studied the Thermodynamic Uncertainty Relation for open quantum systems. In his doctoral studies, he intends to continue this work and apply his expertise in ``Quantum Inspired Evolutionary Biology''

 

Maxwell Aifer

Max has been at UMBC since August 2020. After a very impressive and successful research rotation, he has accepted to stay on. His research will focus on the Optimal Control and Thermodynamics of Quantum Communication.

   
Semper Anticus!
]]> Effective immediately two new graduate students have joined the group: Bhavesh Valecha Bhavesh will be joining the Physics Graduate Program at UMBC in August 2021. He holds a Master of Science... https://beta.my.umbc.edu/api/v0/pixel/news/102488/guest@my.umbc.edu/526dc22483f0a73f27e7d9a4f96bf4f3/api/pixel Quantum Thermodynamics https://beta.my.umbc.edu/groups/quthermo https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/original.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxlarge.png?1502988446 https://assets4-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xlarge.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/large.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/medium.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/small.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxsmall.png?1502988446 Quantum Thermodynamics 1 1 true Fri, 09 Jul 2021 02:03:10 -0400 Fri, 09 Jul 2021 02:05:11 -0400 Nathan receives DOE's SCGSR award!! CONGRATULATIONS Nathan has been selected to receive the highly selective and prestigious Department of Energy Office of Science Graduate Student Research (SCGSR) award. The SCGSR program provides funding for graduate students to carry out thesis research at a DOE lab in collaboration with a DOE staff scientist. Nathan will work in collaboration with Dr. Yigit Subasi at LANL on a research project exploring the computational and thermodynamic advantages of non-linear quantum systems.

By utilizing quantum phenomena such as entanglement and superposition, quantum computers present the potential to solve certain problems exponentially faster than their classical counterparts. This raises the question of what other resources may be exploited to enhance the performance of quantum devices. The effectively non-linear dynamics of certain quantum systems, such as Bose-Einstein condensates, present just such a resource. Nathan's work will combine the tools of quantum information theory and quantum thermodynamics to quantify to what extent non-linear quantum systems can further speed up computation, and what additional energetic costs may be associated with doing so. ]]> Nathan has been selected to receive the highly selective and prestigious Department of Energy Office of Science Graduate Student Research (SCGSR) award. The SCGSR program provides funding for... https://beta.my.umbc.edu/api/v0/pixel/news/101473/guest@my.umbc.edu/70bbc68a509b9bf826ce6cf315160ec6/api/pixel Quantum Thermodynamics https://beta.my.umbc.edu/groups/quthermo https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/original.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxlarge.png?1502988446 https://assets4-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xlarge.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/large.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/medium.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/small.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxsmall.png?1502988446 Quantum Thermodynamics 0 0 true Tue, 04 May 2021 02:03:29 -0400 Special Issue: Quantum Darwinism and Friends A collection of papers in honor of Dr. Wojciech Zurek ]]> Flyer https://assets2-beta.my.umbc.edu/system/shared/attachments/9e14bba43814b4df9cfda2b8cd6488b4/69f9744c/news/000/101/379/42b6ab389c4620755da3fcafbaef3faa/quantum_darwinism_flyer.pdf?1619761151 https://beta.my.umbc.edu/api/v0/pixel/news/101379/guest@my.umbc.edu/109101be03b7da42ce1917acc0f930f9/api/pixel Quantum Thermodynamics https://beta.my.umbc.edu/groups/quthermo https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/original.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxlarge.png?1502988446 https://assets4-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xlarge.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/large.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/medium.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/small.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxsmall.png?1502988446 Quantum Thermodynamics 1 0 true Fri, 30 Apr 2021 01:40:36 -0400 New Paper: PRX Quantum

Information Scrambling versus Decoherence—Two Competing Sinks for Entropy

Akram Touil and Sebastian Deffner

DOI: https://doi.org/10.1103/PRXQuantum.2.010306

A possible solution of the information paradox can be sought in quantum information scrambling. In this paradigm, it is postulated that all information entering a black hole is rapidly and chaotically distributed across the event horizon, making it impossible to reconstruct the information by means of any local measurement. However, in this scenario, the effects of decoherence are typically ignored, which may render information scrambling moot in cosmological settings. In this work, we develop key steps toward a thermodynamic description of information scrambling in open quantum systems. In particular, we separate the entropy change into contributions arising from scrambling and decoherence, for which we derive statements of the second law. This is complemented with a numerical study of the Sachdev-Ye-Kitaev, Maldacena-Qi, XXX, mixed-field Ising, and Lipkin-Meshkov-Glick models in the presence of decoherence in the energy or in the computational basis.

]]> Information Scrambling versus Decoherence—Two Competing Sinks for Entropy Akram Touil and Sebastian Deffner DOI: https://doi.org/10.1103/PRXQuantum.2.010306 A possible solution of the... https://link.aps.org/doi/10.1103/PRXQuantum.2.010306 https://beta.my.umbc.edu/api/v0/pixel/news/98446/guest@my.umbc.edu/d24dba42dac711d8e3005d15853c0872/api/pixel Quantum Thermodynamics https://beta.my.umbc.edu/groups/quthermo https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/original.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxlarge.png?1502988446 https://assets4-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xlarge.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/large.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/medium.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/small.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxsmall.png?1502988446 Quantum Thermodynamics 0 0 true Wed, 13 Jan 2021 13:26:07 -0500 Special Issue: now open for submisson!

The Special Issue is now open for submission: 1 November 2020 - 30 April 2021

Synthetic nanoscale machines, like their macromolecular biological counterparts, perform tasks that involve the simultaneous manipulation of energy, information, and matter. In this they are information engines—systems with two inextricably intertwined characters. The first aspect, call it “physical”, is the one in which the system—seen embedded in a material substrate—is driven by, manipulates, stores, and dissipates energy. The second aspect, call it “informational”, is the one in which the system—seen in terms of its spatial and temporal organization—generates, stores, loses, and transforms information. Information engines operate by synergistically balancing both aspects to support a given functionality, such as extracting work from a heat reservoir or using thermodynamic resources to compute.

Recent years witnessed remarkable progress in the theoretical understanding and experimental exploration of how physical systems compute, process, and transfer information. In short, we are on the verge of a new paradigm of thermodynamic computing. It is now time to take stock and record this progress in a journal special issue. The prospects were recently reviewed in the Computing Community Consortium’s report on Thermodynamic Computing from the workshop held 3-5 January 2019.

The nascent topic of information engines for thermodynamic computing has blossomed into an exciting, cutting-edge research frontier that promises both fundamental and practical breakthroughs. The Special Issue will serve as an important rallying point for future research on thermodynamic computing.

The depth and importance of this area of research and the rapid recent progress motivate the journal special issue on Thermodynamic Computing with Information Engines. Its aim is to facilitate the exchange ideas from research in Nonequilibrium Thermodynamics, Classical and Quantum Information, Statistical Mechanics, Biophysics, and Nonlinear Dynamics. Fundamental questions arise at the boundaries between these disciplines that are relevant to a wide variety of related fields including Nanoscale Statistical Mechanics, Finite-Time Thermodynamics, Quantum Thermodynamics, Quantum Computation, Quantum Communication, Quantum Optimal Control Theory, and Biological Physics ]]> The Special Issue is now open for submission: 1 November 2020 - 30 April 2021 Synthetic nanoscale machines, like their macromolecular biological counterparts, perform tasks that involve the... http://csc.ucdavis.edu/Special_Issue.html Flyer https://assets2-beta.my.umbc.edu/system/shared/attachments/263ade3cd45578afb19a4168676ffd17/69f9744c/news/000/097/309/b58c93eece1575ea00d1f018c0bedeb4/HR_A94318_J_of_Statistical_Physics_Spl_Issue=210x279.pdf?1604999811 https://beta.my.umbc.edu/api/v0/pixel/news/97309/guest@my.umbc.edu/e95b106c6af1f9d307582ff8d4bc9154/api/pixel Quantum Thermodynamics https://beta.my.umbc.edu/groups/quthermo https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/original.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxlarge.png?1502988446 https://assets4-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xlarge.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/large.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/medium.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/small.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxsmall.png?1502988446 Quantum Thermodynamics 0 0 true Tue, 10 Nov 2020 04:17:20 -0500 Tue, 10 Nov 2020 04:17:49 -0500 New Paper: Nature Physics STA to cure cancer

Controlling the speed and trajectory of evolution with counterdiabatic driving

Shamreen Iram, Emily Dolson, Joshua Chiel, Julia Pelesko, Nikhil Krishnan, Özenç Güngör, Benjamin Kuznets-Speck, Sebastian Deffner, Efe Ilker, Jacob G. Scott, and Michael Hinczewski

Nature Physics (2020)

The pace and unpredictability of evolution are critically relevant in a variety of modern challenges, such as combating drug resistance in pathogens and cancer, understanding how species respond to environmental perturbations like climate change and developing artificial selection approaches for agriculture. Great progress has been made in quantitative modelling of evolution using fitness landscapes, allowing a degree of prediction for future evolutionary histories. Yet fine-grained control of the speed and distributions of these trajectories remains elusive. We propose an approach to achieve this using ideas originally developed in a completely different context—counterdiabatic driving to control the behaviour of quantum states for applications like quantum computing and manipulating ultracold atoms. Implementing these ideas for the first time in a biological context, we show how a set of external control parameters (that is, varying drug concentrations and types, temperature and nutrients) can guide the probability distribution of genotypes in a population along a specified path and time interval. This level of control, allowing empirical optimization of evolutionary speed and trajectories, has myriad potential applications, from enhancing adaptive therapies for diseases to the development of thermotolerant crops in preparation for climate change, to accelerating bioengineering methods built on evolutionary models, like directed evolution of biomolecules. ]]> Controlling the speed and trajectory of evolution with counterdiabatic driving Shamreen Iram, Emily Dolson, Joshua Chiel, Julia Pelesko, Nikhil Krishnan, Özenç Güngör, Benjamin Kuznets-Speck,... https://beta.my.umbc.edu/api/v0/pixel/news/95098/guest@my.umbc.edu/d5b5e1c2194f628978ab1d86d775a823/api/pixel Quantum Thermodynamics https://beta.my.umbc.edu/groups/quthermo https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/original.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxlarge.png?1502988446 https://assets4-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xlarge.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/large.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/medium.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/small.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxsmall.png?1502988446 Quantum Thermodynamics 0 0 true Mon, 24 Aug 2020 14:02:20 -0400 New Paper: EPL

Thermodynamic control —An old paradigm with new applications

Sebastian Deffner and Marcus V. S. Bonança

EPL 131, 20001 (2020)

Tremendous research efforts have been invested in exploring and designing so-called shortcuts to adiabaticity. These are finite-time processes that produce the same final states that would result from infinitely slow driving. Most of these techniques rely on auxiliary fields and quantum control, which makes them rather costly to implement. In this Perspective we outline an alternative paradigm for optimal control that has proven powerful in a wide variety of situations ranging from heat engines over chemical reactions to quantum dynamics —thermodynamic control. Focusing on only a few, selected milestones we seek to provide a pedagogical entry point into this powerful and versatile framework. ]]> Thermodynamic control —An old paradigm with new applications Sebastian Deffner and Marcus V. S. Bonança EPL 131, 20001 (2020) Tremendous research efforts have been invested in exploring and... https://iopscience.iop.org/article/10.1209/0295-5075/131/20001 https://beta.my.umbc.edu/api/v0/pixel/news/94695/guest@my.umbc.edu/979641c2b448057a26cb1893982da683/api/pixel Quantum Thermodynamics https://beta.my.umbc.edu/groups/quthermo https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/original.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxlarge.png?1502988446 https://assets4-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xlarge.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/large.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/medium.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/small.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxsmall.png?1502988446 Quantum Thermodynamics 0 0 true Fri, 07 Aug 2020 09:06:59 -0400 Fri, 07 Aug 2020 09:07:52 -0400 New Paper: New Journal of Physics

Stochastic thermodynamics of relativistic Brownian motion

P. S. Pal and Sebastian Deffner

New J. Phys. 22, 073054 (2020)

Physical scenarios that require a relativistic treatment are ubiquitous in nature, ranging from cosmological objects to charge carriers in Dirac materials. Interestingly all of these situations have in common that the systems typically operate very far from thermal equilibrium. Therefore, if and how the framework of stochastic thermodynamics applies at relativistic energies is a salient question. In the present work we generalize the notions of stochastic heat and work for the relativistic Langevin equation and derive the fluctuation theorems without and with feedback. For processes with feedback we consider the ramifications of the lack of simultaneity of events in the inertial frames of observer and Brownian particles, and we argue that the framework of absolute irreversibility is instrumental to avoid acausal considerations. The analysis is concluded with a few remarks on potential experimental applications in graphene. ]]> Stochastic thermodynamics of relativistic Brownian motion P. S. Pal and Sebastian Deffner New J. Phys. 22, 073054 (2020) Physical scenarios that require a relativistic treatment are... https://iopscience.iop.org/article/10.1088/1367-2630/ab9ce6 https://beta.my.umbc.edu/api/v0/pixel/news/94504/guest@my.umbc.edu/e844305bd4392845c1d153fa158720f0/api/pixel Quantum Thermodynamics https://beta.my.umbc.edu/groups/quthermo https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/original.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxlarge.png?1502988446 https://assets4-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xlarge.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/large.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/medium.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/small.png?1502988446 https://assets1-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xsmall.png?1502988446 https://assets3-beta.my.umbc.edu/system/shared/avatars/groups/000/001/393/cfed54c41318d9b704a1ec1b884218b1/xxsmall.png?1502988446 Quantum Thermodynamics 0 0 true Tue, 28 Jul 2020 10:57:42 -0400