Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Tova Feldmann"'
Autor:
Tova Feldmann, José P. Palao
Publikováno v:
Fundamental Theories of Physics ISBN: 9783319990453
Quantum cycles are the microscopic version of the macroscopic thermodynamic cycles, such as the Carnot cycle or the Otto cycle. The quantum Otto cycle consists of four-strokes, two adiabats and two isochores. The equations for the dynamics on the adi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea5e5eaf5b7415b904aeca50a68b7e74
https://doi.org/10.1007/978-3-319-99046-0_3
https://doi.org/10.1007/978-3-319-99046-0_3
Autor:
Ronnie Kosloff, Tova Feldmann
Publikováno v:
Physical Review E. 93
The relation between the geometry of refrigeration cycles and their performance is explored. The model studied is based on a coupled spin system. Small cycle times, termed sudden refrigerators, develop coherence and inner friction. We explore the int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe51da3737ff8f2015fa9f87d74e5983
https://doi.org/10.1103/physreve.93.052150
https://doi.org/10.1103/physreve.93.052150
Publikováno v:
International Journal of Quantum Information. :99-104
We consider an elementary collision model of a molecular reservoir upon which an external field is applied and the work is dissipated into heat. To realize macroscopic irreversibility at the microscopic level, we introduce a "graceful" irreversible m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7183e0cae623d597e523cabba6f9938
https://doi.org/10.1142/s0219749906001645
https://doi.org/10.1142/s0219749906001645
Publikováno v:
International Journal of Quantum Chemistry. 92:345-354
We present a novel explicit decoupling procedure that leads to exact solutions of the Schrodinger equation for N harmonic oscillators in the presence of general bilinear perturbing potentials. This generalizes previous work, which was restricted to o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4e68ec6426a9076c30c1f56b0b2017e
https://doi.org/10.1002/qua.10521
https://doi.org/10.1002/qua.10521
Publikováno v:
International Journal of Quantum Chemistry. 86:245-255
We present a theory of shift operators (i.e., operators which shift given solutions into other solutions), including their relationship with deformed algebras and describe a general constructive method which enables us to calculate such operators for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1ae01dd61de8cb03c6659d6319b01b5
https://doi.org/10.1002/qua.1103
https://doi.org/10.1002/qua.1103
Publikováno v:
Journal of Mathematical Physics. 41:5897-5909
We present simple explicit coordinate transformations which serve to decouple the Schrodinger equation for a pair of (not necessarily identical) harmonic oscillators in the presence of bilinear perturbing potentials. We derive general conditions for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ded63d866d8484ff8679f62fa026ede
https://doi.org/10.1063/1.1288248
https://doi.org/10.1063/1.1288248
Autor:
Ronnie Kosloff, Tova Feldmann
Publikováno v:
Physical Review E. 61:4774-4790
The performance in finite time of a discrete heat engine with internal friction is analyzed. The working fluid of the engine is composed of an ensemble of noninteracting two level systems. External work is applied by changing the external field and t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0da552bebffd7e035bdbf78332bbe568
https://doi.org/10.1103/physreve.61.4774
https://doi.org/10.1103/physreve.61.4774
Publikováno v:
Canadian Journal of Physics. 76:129-141
Eigenfunctions of a generic double-well potential are calculated and found to be of two distinct kinds. The transition from delocalized to localized form, driven by time- independent and time-dependent perturbations, is examined in detail. It is show
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d745e5d433bf3d017d77efb83746c1c1
https://doi.org/10.1139/cjp-76-2-129
https://doi.org/10.1139/cjp-76-2-129
Publikováno v:
Molecular Physics. 88:611-620
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b8a1aa64cbbfe096ff6b11be5962070
https://doi.org/10.1080/00268979609482441
https://doi.org/10.1080/00268979609482441
Publikováno v:
American Journal of Physics. 64:485-492
A simple example of a four‐stroke engine operated in finite‐time is analyzed. The working medium consists of noninteracting two‐level systems or harmonic oscillators. The cycle of operation is analogous to a four‐stroke Otto cycle. The only s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f67c90f4e8a7b578ca4eb6d163f988e9
https://doi.org/10.1119/1.18197
https://doi.org/10.1119/1.18197