Non-Hermitian coupled cluster method for non-stationary systems and its interaction-picture reinterpretation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62690094%3A18470%2F20%3A50016876" target="_blank" >RIV/62690094:18470/20:50016876 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389005:_____/20:00524448

Výsledek na webu

<a href="https://link.springer.com/content/pdf/10.1140/epjp/s13360-020-00374-z.pdf" target="_blank" >https://link.springer.com/content/pdf/10.1140/epjp/s13360-020-00374-z.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjp/s13360-020-00374-z" target="_blank" >10.1140/epjp/s13360-020-00374-z</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Non-Hermitian coupled cluster method for non-stationary systems and its interaction-picture reinterpretation

Popis výsledku v původním jazyce

The interaction picture in a non-Hermitian realization is discussed in detail and considered for its practical use in many-body quantum physics. The resulting non-Hermitian interaction-picture (NHIP) description of dynamics, in which both the wave functions and operators belonging to physical observables cease to remain constant in time, is a non-Hermitian generalization of the traditional Dirac picture of standard quantum mechanics, which itself is widely used in quantum field theory calculations. Particular attention is paid here to the variational (or, better, bivariational) and dynamical (i.e., non-stationary) aspects that are characteristic of the coupled cluster method (CCM) techniques that nowadays form one of the most versatile and most accurate of all available formulations of quantum many-body theory. In so doing we expose and exploit multiple parallels between the NHIP and the CCM in its time-dependent versions.

Název v anglickém jazyce

Non-Hermitian coupled cluster method for non-stationary systems and its interaction-picture reinterpretation

Popis výsledku anglicky

The interaction picture in a non-Hermitian realization is discussed in detail and considered for its practical use in many-body quantum physics. The resulting non-Hermitian interaction-picture (NHIP) description of dynamics, in which both the wave functions and operators belonging to physical observables cease to remain constant in time, is a non-Hermitian generalization of the traditional Dirac picture of standard quantum mechanics, which itself is widely used in quantum field theory calculations. Particular attention is paid here to the variational (or, better, bivariational) and dynamical (i.e., non-stationary) aspects that are characteristic of the coupled cluster method (CCM) techniques that nowadays form one of the most versatile and most accurate of all available formulations of quantum many-body theory. In so doing we expose and exploit multiple parallels between the NHIP and the CCM in its time-dependent versions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

The European physical journal plus

ISSN

2190-5444

e-ISSN

—

Svazek periodika

135

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

35

Strana od-do

"Article number: 374"

Kód UT WoS článku

000530492700003

EID výsledku v databázi Scopus

2-s2.0-85083983130