Zobrazeno 1 - 10
of 180
pro vyhledávání: '"Kamenev, A."'
In this paper, for the first time, analytical expressions for determination of the wavelength of defect modes (DMs) in one-dimensional (1D) photonic crystals (PCs) with two defect layers (DLs) were obtained from the condition of zero reflection. Anal
Externí odkaz:
http://arxiv.org/abs/2408.04397
Autor:
Gindikin, Yasha, Li, Songci, Levchenko, Alex, Kamenev, Alex, Chubukov, Andrey V., Maslov, Dmitrii L.
We demonstrate that the optical conductivity of a Fermi liquid (FL) in the absence of umklapp scattering is dramatically affected by the topology of the Fermi surface (FS). Specifically, electron-electron (ee) scattering leads to rapid current relaxa
Externí odkaz:
http://arxiv.org/abs/2406.10503
Dissipative systems with decoherence free subspaces, a.k.a. dark spaces (DSs), can be used to protect quantum information. At the same time, dissipation is expected to give rise to coherent information degradation outside the DS. Employed to support
Externí odkaz:
http://arxiv.org/abs/2406.02286
Autor:
Xie, Rongfeng, Kamenev, Alex
We discuss adiabatic spectra and dynamics of the quantum, i.e. transverse field, Hopfield model with dilute memories (the number of stored patterns $p < log_2 N$, where $N$ is the number of qubits). At some critical transverse field the model undergo
Externí odkaz:
http://arxiv.org/abs/2405.13240
Quantum computers promise a qualitative speedup in solving a broad spectrum of real-life optimization problems. The latter can be mapped onto the task of finding low-energy states of spin glasses, which is known to be exceedingly difficult. Using D-W
Externí odkaz:
http://arxiv.org/abs/2403.01034
We study a Lindbladian generalization of the Anderson model of localization that describes disordered free fermions coupled to a disordered environment. From finite size scaling of both eigenvalue statistics and participation ratio, we identify local
Externí odkaz:
http://arxiv.org/abs/2401.14006
Autor:
Gindikin, Yasha, Kamenev, Alex
We show that Rashba spin-orbit interaction (RSOI) modifies electron-electron interaction vertex giving rise to a spectrum of novel phenomena. First, the spin-orbit-modified Coulomb interactions induce $p$-wave superconducting order, without any need
Externí odkaz:
http://arxiv.org/abs/2310.20084
Publikováno v:
Phys. Rev. Lett. 131, 096501 (2023)
We address Coulomb drag and near-field heat transfer in a double-layer system of incoherent metals. Each layer is modeled by an array of tunnel-coupled SYK dots with random inter-layer interactions. Depending on the strength of intra-dot interactions
Externí odkaz:
http://arxiv.org/abs/2304.12221
Autor:
Zhang, Hao, Kamenev, Alex
Publikováno v:
Phys. Rev. B 108, 224201 (2023)
We study mesoscopic signatures of the topological Anderson transitions in topological disordered chains. To this end we introduce an integer-valued sample-specific definition of the topological index in finite size systems. Its phase diagram exhibits
Externí odkaz:
http://arxiv.org/abs/2301.04565
Autor:
Thompson, Foster, Kamenev, Alex
We review and further develop the Keldysh functional integral technique for the study of Lindbladian evolution of many-body driven-dissipative quantum systems. A systematic and pedagogical account of the dynamics of generic bosonic and fermionic Lind
Externí odkaz:
http://arxiv.org/abs/2301.02953