Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Auditya Sharma"'
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043395 (2020)
We systematically study the effect of disorder and interactions on a quasi-one-dimensional diamond chain possessing flat bands. Disorder localizes all the single-particle eigenstates, while at low disorder strengths, we obtain weak flat-band based lo
Externí odkaz:
https://doaj.org/article/f1fc2dd48c0246f781fdf26f76dce501
Publikováno v:
Physical Review Research, Vol 2, Iss 1, p 013175 (2020)
We report the existence of flat bands in a p-wave superconducting Kitaev ladder. We identify two sets of parameters for which the Kitaev ladder sustains flat bands. These flat bands are accompanied by highly localized eigenstates known as compact loc
Externí odkaz:
https://doaj.org/article/d39f865671c7436bb2656ede48d369d9
Publikováno v:
Physical Review A. 107
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6a873cc035b6aa798fba704289880a6
https://doi.org/10.1103/physreva.107.059901
https://doi.org/10.1103/physreva.107.059901
We study the effect of quasiperiodic Aubry-Andr\'e disorder on the energy spectrum and eigenstates of a one-dimensional all-bands-flat (ABF) diamond chain. The ABF diamond chain possesses three dispersionless flat bands with all the eigenstates compa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82a1cb9255c5642864d7c9014117b0fa
http://arxiv.org/abs/2205.02859
http://arxiv.org/abs/2205.02859
We investigate the effect of a two-level jump process or random telegraph noise on a square wave driven tight-binding lattice. In the absence of the noise, the system is known to exhibit dynamical localization for specific ratios of the amplitude and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::427d23d7e46925690d042f5f871e1731
http://arxiv.org/abs/2204.05542
http://arxiv.org/abs/2204.05542
Publikováno v:
Physical Review B. 104
We numerically study the evolution of spectral correlations in the entanglement Hamiltonian (EH) of non-interacting fermions in the Aubry-Andr\'e-Harper (AAH) model. We analyze the time evolution of the EH spectrum in a nonequilibrium setting by stud
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b1694001fa398adb7270918937ce413
https://doi.org/10.1103/physrevb.104.155137
https://doi.org/10.1103/physrevb.104.155137
Autor:
Nilanjan Roy, Auditya Sharma
Publikováno v:
Physical Review B. 103
We uncover a systematic structure in the single particle phase-diagram of the quasiperiodic Aubry-Andr\'e-Harper(AAH) model with power-law hoppings ($\sim \frac{1}{r^\sigma}$) when the quasiperiodicity parameter is chosen to be a member of the `metal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e668775d8fa376cc82f27678a2ce1fc0
https://doi.org/10.1103/physrevb.103.075124
https://doi.org/10.1103/physrevb.103.075124
Autor:
Auditya Sharma, Nilanjan Roy
Publikováno v:
Journal of physics. Condensed matter : an Institute of Physics journal. 33(33)
We investigate the nonequilbrium dynamics of entanglement entropy and out-of-time-order correlator (OTOC) of noninteracting fermions at half-filling starting from a product state to distinguish the delocalized, multifractal (in the limit of nearest n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e3bf180887ae8f37cdf1029c75fc717
https://pubmed.ncbi.nlm.nih.gov/34062514
https://pubmed.ncbi.nlm.nih.gov/34062514
The Fano-Anderson chain consists of a linear lattice with a discrete side-unit, and it exhibits Fano-resonant scattering due to coupling between the discrete states of the side-unit and the tight-binding continuum. We study Fano-resonance-assisted tr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c14c02161bc1ccb95209239ef01b088
http://arxiv.org/abs/2011.01253
http://arxiv.org/abs/2011.01253
Publikováno v:
Physical Review B. 102
We study the phenomenon of many-body localization (MBL) in an interacting system subjected to a combined DC as well as a square wave AC electric field. First, the condition for the dynamical localization, coherent destruction of Wannier-Stark localiz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba762c556a95979cf3c6b3553abb70e3
https://doi.org/10.1103/physrevb.102.024201
https://doi.org/10.1103/physrevb.102.024201