Entropy of a quantum oscillator in a structured environment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10289319" target="_blank" >RIV/00216208:11320/14:10289319 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/0031-8949/89/9/095702" target="_blank" >http://dx.doi.org/10.1088/0031-8949/89/9/095702</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0031-8949/89/9/095702" target="_blank" >10.1088/0031-8949/89/9/095702</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Entropy of a quantum oscillator in a structured environment

Popis výsledku v původním jazyce

Entropy of a quantum oscillator in the presence of a quantum environment (or heat bath) is studied here. The spectral density, which comprises the environmental influences, here corresponds to a quasi-monochromatic thermal harmonic noise. This further implies that the environment is a structured one compared to the usually employed unstructured strictly ohmic environment. The entropy is found to be vanishing as the temperature approaches its absolute zero value, which thereby guarantees the third law ofthermodynamics. At very high temperatures the classical behavior is observed. Similar to the usually employed ohmic-Drude bath model, the coefficient of the leading temperature dependent term in the entropy (at low temperatures) is proportional to the damping strength but not on other parameters of the spectral density characterising the bath.

Název v anglickém jazyce

Entropy of a quantum oscillator in a structured environment

Popis výsledku anglicky

Entropy of a quantum oscillator in the presence of a quantum environment (or heat bath) is studied here. The spectral density, which comprises the environmental influences, here corresponds to a quasi-monochromatic thermal harmonic noise. This further implies that the environment is a structured one compared to the usually employed unstructured strictly ohmic environment. The entropy is found to be vanishing as the temperature approaches its absolute zero value, which thereby guarantees the third law ofthermodynamics. At very high temperatures the classical behavior is observed. Similar to the usually employed ohmic-Drude bath model, the coefficient of the leading temperature dependent term in the entropy (at low temperatures) is proportional to the damping strength but not on other parameters of the spectral density characterising the bath.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BE - Teoretická fyzika

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physica Scripta

ISSN

0031-8949

e-ISSN

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Svazek periodika

89

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

SE - Švédské království

Počet stran výsledku

6

Strana od-do

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Kód UT WoS článku

000343578000025

EID výsledku v databázi Scopus

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