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Title: Jarzynski Equality for Driven Quantum Field Theories

Abstract

The fluctuation theorems, and in particular, the Jarzynski equality, are the most important pillars of modern nonequilibrium statistical mechanics. We extend the quantum Jarzynski equality together with the two-time measurement formalism to their ultimate range of validity—to quantum field theories. To this end, we focus on a time-dependent version of scalar Φ4. We find closed-form expressions for the resulting work distribution function, and we find that they are proper physical observables of the quantum field theory. Also, we show explicitly that the Jarzynski equality and Crooks fluctuation theorems hold at one-loop order independent of the renormalization scale. As a numerical case study, we compute the work distributions for an infinitely smooth protocol in the ultrarelativistic regime. In this study, it is found that work done through processes with pair creation is the dominant contribution.

Authors:
;
Publication Date:
Research Org.:
California Institute of Technology (CalTech), Pasadena, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1422849
Alternate Identifier(s):
OSTI ID: 1499090
Grant/Contract Number:  
SC0011632
Resource Type:
Published Article
Journal Name:
Physical Review. X
Additional Journal Information:
Journal Name: Physical Review. X Journal Volume: 8 Journal Issue: 1; Journal ID: ISSN 2160-3308
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Bartolotta, Anthony, and Deffner, Sebastian. Jarzynski Equality for Driven Quantum Field Theories. United States: N. p., 2018. Web. doi:10.1103/PhysRevX.8.011033.
Bartolotta, Anthony, & Deffner, Sebastian. Jarzynski Equality for Driven Quantum Field Theories. United States. https://doi.org/10.1103/PhysRevX.8.011033
Bartolotta, Anthony, and Deffner, Sebastian. Tue . "Jarzynski Equality for Driven Quantum Field Theories". United States. https://doi.org/10.1103/PhysRevX.8.011033.
@article{osti_1422849,
title = {Jarzynski Equality for Driven Quantum Field Theories},
author = {Bartolotta, Anthony and Deffner, Sebastian},
abstractNote = {The fluctuation theorems, and in particular, the Jarzynski equality, are the most important pillars of modern nonequilibrium statistical mechanics. We extend the quantum Jarzynski equality together with the two-time measurement formalism to their ultimate range of validity—to quantum field theories. To this end, we focus on a time-dependent version of scalar Φ4. We find closed-form expressions for the resulting work distribution function, and we find that they are proper physical observables of the quantum field theory. Also, we show explicitly that the Jarzynski equality and Crooks fluctuation theorems hold at one-loop order independent of the renormalization scale. As a numerical case study, we compute the work distributions for an infinitely smooth protocol in the ultrarelativistic regime. In this study, it is found that work done through processes with pair creation is the dominant contribution.},
doi = {10.1103/PhysRevX.8.011033},
journal = {Physical Review. X},
number = 1,
volume = 8,
place = {United States},
year = {2018},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1103/PhysRevX.8.011033

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Works referencing / citing this record:

Work Distributions on Quantum Fields
journal, June 2019


Fluctuation Theorems for a Quantum Channel
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