Zobrazeno 1 - 10
of 408
pro vyhledávání: '"Bhatt, P N"'
A wide variety of experimental platforms, ranging from semiconductor quantum-dot arrays to moir\'e materials, have recently emerged as powerful quantum simulators for studying the Hubbard model and its variants. Motivated by these developments, here,
Externí odkaz:
http://arxiv.org/abs/2410.00955
Autor:
Samajdar, Rhine, Bhatt, R. N.
Publikováno v:
Phys. Rev. B 109, 235128 (2024)
The search for elusive Nagaoka-type ferromagnetism in the Hubbard model has recently enjoyed renewed attention with the advent of a variety of experimental platforms enabling its realization, including moir\'e materials, quantum dots, and ultracold a
Externí odkaz:
http://arxiv.org/abs/2311.09279
Autor:
Kumar, Prashant, Bhatt, R. N.
Publikováno v:
Phys. Rev. B 108, L241113 (2023)
We study the scaling properties of the entanglement entropy (EE) near quantum critical points in interacting random antiferromagnetic (AF) spin chains. Using density-matrix renormalization group, we compute the half-chain EE near the topological phas
Externí odkaz:
http://arxiv.org/abs/2307.00062
Autor:
Samajdar, Rhine, Bhatt, R. N.
Publikováno v:
Phys. Rev. A 110, L021303 (2024)
The search for ferromagnetism in the Hubbard model has been a problem of outstanding interest since Nagaoka's original proposal in 1966. Recent advances in quantum simulation have today enabled the study of tunable doped Hubbard models in ultracold a
Externí odkaz:
http://arxiv.org/abs/2305.05683
The non-equilibrium dynamics of disordered many-body quantum systems after a global quantum quench unveils important insights about the competition between interactions and disorder, yielding in particular an insightful perspective on many body local
Externí odkaz:
http://arxiv.org/abs/2303.02415
Autor:
Kumar, Prashant, Bhatt, R. N.
Publikováno v:
Phys. Rev. B 106, 115101 (2022)
We study the phase diagram of $\nu_e=7/3$ state in the $N=1$ Landau level in the presence of band mass anisotropy. Using density matrix renormalization group on an infinite cylinder geometry, we find a continuous transition from the topologically ord
Externí odkaz:
http://arxiv.org/abs/2205.06310
Autor:
Krishna, Akshay, Bhatt, R. N.
Publikováno v:
Annals of Physics (2021), 168537
We study a simple non-interacting nearest neighbor tight-binding model in one dimension with disorder, where the hopping terms are chosen randomly. This model exhibits a well-known singularity at the band center both in the density of states and loca
Externí odkaz:
http://arxiv.org/abs/2107.08518
Autor:
Kumar, Prashant, Bhatt, R. N.
Publikováno v:
Phys. Rev. B 104, 035147 (2021)
We study the effects of anisotropic interactions in the quantum Hall effect in the presence of a fourfold discrete rotational ($C_4$) symmetry. Employing the density matrix renormalization group technique on an infinite cylinder geometry (iDMRG), we
Externí odkaz:
http://arxiv.org/abs/2104.09670
Autor:
Bhatt, R. N., Krishna, Akshay
Publikováno v:
Annals of Physics (2021), 168438
We discuss the problem of localization in two dimensional electron systems in the quantum Hall (single Landau level) regime. After briefly summarizing the well-studied problem of Anderson localization in the non-interacting case, we concentrate on th
Externí odkaz:
http://arxiv.org/abs/2104.01635
Autor:
Mohdeb, Youcef, Vahedi, Javad, Moure, N., Roshani, A., Lee, Hyun-Yong, Bhatt, Ravindra N., Kettemann, Stefan, Haas, Stephan
We examine the concurrence and entanglement entropy in quantum spin chains with random long-range couplings, spatially decaying with a power-law exponent $\alpha$. Using the strong disorder renormalization group (SDRG) technique, we find by analytica
Externí odkaz:
http://arxiv.org/abs/2009.11286