Zobrazeno 1 - 10
of 272
pro vyhledávání: '"I, Karanikas"'
Publikováno v:
Open Systems & Information Dynamics. 28
In this work we study the reduced dynamics of a system embedded in a quantum environment, with the use of correlation functions produced through appropriately defined reduced generating functionals. Our construction is based on expressing these funct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffe906c5d0217127eddc80a74d67dd25
https://doi.org/10.1142/s1230161221500116
https://doi.org/10.1142/s1230161221500116
Autor:
Sotirios Kakavas, A. Almperti, Z. Mastora, Michail Chourdakis, A. Kournidakis, I. Karanikas, Christina N. Katsagoni, Aggeliki Papanikolaou, Dimitrios Karayiannis
Publikováno v:
Clinical Nutrition ESPEN. 46:S601-S602
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2bcaa0a2366e89fec9465d9b739f44d7
https://doi.org/10.1016/j.clnesp.2021.09.169
https://doi.org/10.1016/j.clnesp.2021.09.169
Publikováno v:
Letters in Mathematical Physics. 111
The metaplectic correction in Kahler quantization is a result of the introduction of the half-form structure when considering geometric quantization over Kahler manifolds. This correction is a very interesting topic, since no mathematical argument ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a55f12561eae3a6edf93f391bca0578
https://doi.org/10.1007/s11005-021-01368-3
https://doi.org/10.1007/s11005-021-01368-3
We derive time dependent correlation functions in an one dimensional XY spin model with the use of generating functionals, the latter being defined as path integrals over fermionic coherent states. We focus on the proper construction of the aforement
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22752690cb731cf0cc7c16afd2a07e93
http://arxiv.org/abs/1905.05262
http://arxiv.org/abs/1905.05262
Publikováno v:
Physical Review A. 99
In this Reply we briefly clarify the main points of our method to construct coherent-state path integrals in the continuum and we reply to the critique raised by in the preceding Comment by Kochetov [Phys. Rev. A 99, 026101 (2019)]. By using definite
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e660206b6957e76959cac4212324ed4
https://doi.org/10.1103/physreva.99.026102
https://doi.org/10.1103/physreva.99.026102
Publikováno v:
Annals of Physics. 372:226-237
We define the time-continuous spin coherent-state path integral in a way that is free from inconsistencies. The proposed definition is used to reproduce known exact results. Such a formalism opens new possibilities for applying approximations with im
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0685f17a6ca1f2726bc2e37764f7ee32
https://doi.org/10.1016/j.aop.2016.05.012
https://doi.org/10.1016/j.aop.2016.05.012
Publikováno v:
Physical Review A. 98
We study the dynamics of an interacting Bose-Hubbard chain coupled to a non-Markovian environment. Our basic tool is the reduced generating functional expressed as a path integral over spin-coherent states. We calculate the leading contribution to th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::93a2c8b6d969d652d7d513e0818ddc70
https://doi.org/10.1103/physreva.98.013637
https://doi.org/10.1103/physreva.98.013637
Publikováno v:
Il Giornale di chirurgia. 39(4)
Two-dimensional transrectal ultrasonography can nowadays be safely used for preoperatively evaluation of perianal fistulas. The aim of this study is to demonstrate its efficacy by comparing the results of this imaging technique with the surgical find
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::e9d3f597ed0b567b4b797d6d3dc33254
https://pubmed.ncbi.nlm.nih.gov/30039796
https://pubmed.ncbi.nlm.nih.gov/30039796
We employ the recently introduced Geometric Phase Propagator Approach (GPPA) [Phys. Rev. A85, 062110 (2012)] to develop an improved perturbative scheme for the calculation of life times in driven quantum systems. This incorporates a resummation of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44be3ecd0996570165677ade15290f04
http://arxiv.org/abs/1807.01764
http://arxiv.org/abs/1807.01764
Autor:
Pierfrancesco Buonsante, G. Kordas, Sandro Wimberger, Raffaella Burioni, A. I. Karanikas, Dirk Witthaut, Alessandro Vezzani
Publikováno v:
The European Physical Journal Special Topics. 224:2127-2171
Open many-body quantum systems have attracted renewed interest in the context of quantum information science and quantum transport with biological clusters and ultracold atomic gases. The physical relevance in many-particle bosonic systems lies in th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70c6747abf8e72602c4b0f02a222ddee
https://doi.org/10.1140/epjst/e2015-02528-2
https://doi.org/10.1140/epjst/e2015-02528-2