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Energy and Heat Fluctuations in a Temperature Quench

Abstract

Fluctuations of energy and heat are investigated during the relaxation following the instantaneous temperature quench of an extended system. Results are obtained analytically for the Gaussian model and for the large N model quenched below the critical temperature T{sub c}. The main finding is that fluctuations exceeding a critical threshold do condense. Though driven by a mechanism similar to that of Bose—Einstein condensation, this phenomenon is an out-of-equilibrium feature produced by the breaking of energy equipartition occurring in the transient regime. The dynamical nature of the transition is illustrated by phase diagrams extending in the time direction. (general)
Authors:
Zannetti, M.; Corberi, F.; [1]  Gonnella, G.; [2]  Piscitelli, A., E-mail: mrc.zannetti@gmail.com, E-mail: corberi@sa.infn.it, E-mail: gonnella@ba.infn.it, E-mail: antps@hotmial.it [3] 
  1. Dipartimento di Fisica “E. Caianiello”, and CNISM, Unità di Salerno, Università di Salerno, via Giovanni Paolo II 132, 84084 Fisciano (Italy)
  2. Dipartimento di Fisica, Università di Bari and INFN, Sezione di Bari, via Amendola 173, 70126 Bari (Italy)
  3. Division of Physical Sciences, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371 (Singapore)
Publication Date:
Oct 15, 2014
Product Type:
Journal Article
Resource Relation:
Journal Name: Communications in Theoretical Physics; Journal Volume: 62; Journal Issue: 4; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BOSE-EINSTEIN CONDENSATION; CRITICAL TEMPERATURE; EQUILIBRIUM; FLUCTUATIONS; HEAT; PHASE DIAGRAMS; RELAXATION; TRANSIENTS
OSTI ID:
22382993
Country of Origin:
China
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0253-6102; TRN: CN15P0902088565
Availability:
Available from http://dx.doi.org/10.1088/0253-6102/62/4/13
Submitting Site:
INIS
Size:
page(s) 555-570
Announcement Date:
Sep 23, 2015

Citation Formats

Zannetti, M., Corberi, F., Gonnella, G., and Piscitelli, A., E-mail: mrc.zannetti@gmail.com, E-mail: corberi@sa.infn.it, E-mail: gonnella@ba.infn.it, E-mail: antps@hotmial.it. Energy and Heat Fluctuations in a Temperature Quench. China: N. p., 2014. Web. doi:10.1088/0253-6102/62/4/13.
Zannetti, M., Corberi, F., Gonnella, G., & Piscitelli, A., E-mail: mrc.zannetti@gmail.com, E-mail: corberi@sa.infn.it, E-mail: gonnella@ba.infn.it, E-mail: antps@hotmial.it. Energy and Heat Fluctuations in a Temperature Quench. China. doi:10.1088/0253-6102/62/4/13.
Zannetti, M., Corberi, F., Gonnella, G., and Piscitelli, A., E-mail: mrc.zannetti@gmail.com, E-mail: corberi@sa.infn.it, E-mail: gonnella@ba.infn.it, E-mail: antps@hotmial.it. 2014. "Energy and Heat Fluctuations in a Temperature Quench." China. doi:10.1088/0253-6102/62/4/13. https://www.osti.gov/servlets/purl/10.1088/0253-6102/62/4/13.
@misc{etde_22382993,
title = {Energy and Heat Fluctuations in a Temperature Quench}
author = {Zannetti, M., Corberi, F., Gonnella, G., and Piscitelli, A., E-mail: mrc.zannetti@gmail.com, E-mail: corberi@sa.infn.it, E-mail: gonnella@ba.infn.it, E-mail: antps@hotmial.it}
abstractNote = {Fluctuations of energy and heat are investigated during the relaxation following the instantaneous temperature quench of an extended system. Results are obtained analytically for the Gaussian model and for the large N model quenched below the critical temperature T{sub c}. The main finding is that fluctuations exceeding a critical threshold do condense. Though driven by a mechanism similar to that of Bose—Einstein condensation, this phenomenon is an out-of-equilibrium feature produced by the breaking of energy equipartition occurring in the transient regime. The dynamical nature of the transition is illustrated by phase diagrams extending in the time direction. (general)}
doi = {10.1088/0253-6102/62/4/13}
journal = {Communications in Theoretical Physics}
issue = {4}
volume = {62}
journal type = {AC}
place = {China}
year = {2014}
month = {Oct}
}