Embedding quantum systems with a non-conserved probability in classical environments

Verfasser / Beitragende:
[Alessandro Sergi]
Ort, Verlag, Jahr:
2015
Enthalten in:
Theoretical Chemistry Accounts, 134/6(2015-06-01), 1-9
Format:
Artikel (online)
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024 7 0 |a 10.1007/s00214-015-1679-6  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s00214-015-1679-6 
100 1 |a Sergi  |D Alessandro  |u School of Chemistry and Physics, University of KwaZulu-Natal, Scottsville, Private Bag X01, 3209, Pietermaritzburg, South Africa  |4 aut 
245 1 0 |a Embedding quantum systems with a non-conserved probability in classical environments  |h [Elektronische Daten]  |c [Alessandro Sergi] 
520 3 |a Quantum systems with a non-conserved probability can be described by means of non-Hermitian Hamiltonians and non-unitary dynamics. In this paper, the case in which the degrees of freedom can be partitioned in two subsets with light and heavy masses is treated. A classical limit over the heavy coordinates is taken in order to embed the non-unitary dynamics of the subsystem in a classical environment. Such a classical environment, in turn, acts as an additional source of dissipation (or noise), beyond that represented by the non-unitary evolution. The non-Hermitian dynamics of a Heisenberg two-spin chain, with the spins independently coupled to harmonic oscillators, is considered in order to illustrate the formalism. 
540 |a Springer-Verlag Berlin Heidelberg, 2015 
690 7 |a Non-Hermitian Hamiltonians  |2 nationallicence 
690 7 |a Non-unitary dynamics  |2 nationallicence 
690 7 |a Quantum-classical dynamics  |2 nationallicence 
773 0 |t Theoretical Chemistry Accounts  |d Springer Berlin Heidelberg  |g 134/6(2015-06-01), 1-9  |x 1432-881X  |q 134:6<1  |1 2015  |2 134  |o 214 
856 4 0 |u https://doi.org/10.1007/s00214-015-1679-6  |q text/html  |z Onlinezugriff via DOI 
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950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s00214-015-1679-6  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 100  |E 1-  |a Sergi  |D Alessandro  |u School of Chemistry and Physics, University of KwaZulu-Natal, Scottsville, Private Bag X01, 3209, Pietermaritzburg, South Africa  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Theoretical Chemistry Accounts  |d Springer Berlin Heidelberg  |g 134/6(2015-06-01), 1-9  |x 1432-881X  |q 134:6<1  |1 2015  |2 134  |o 214