Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Pal, Sukla"'
Autor:
Pal, Sukla, Powell, Stephen
Publikováno v:
Phys. Rev. B 109, 094427 (2024)
We investigate quench dynamics of spin ice after removal of a strong magnetic field along the [100] crystal direction, using Monte Carlo simulations and theoretical arguments. We show how the early-time relaxation of the magnetization can be understo
Externí odkaz:
http://arxiv.org/abs/2310.12410
Publikováno v:
Phys. Rev. A 106, 043322 (2022)
Turbulent fluid dynamics typically involves excitations on many different length scales. Classical incompressible fluids can be cleanly represented in Fourier space enabling spectral analysis of energy cascades and other turbulence phenomena. In quan
Externí odkaz:
http://arxiv.org/abs/2112.04012
Publikováno v:
Phys. Rev. A 105, 023308 (2022)
In this paper we develop a theory for an infinitely long droplet state of a zero temperature dipolar bosonic gas. The infinite droplet theory yields simpler equations to solve for the droplet state and its collective excitations. We explore the behav
Externí odkaz:
http://arxiv.org/abs/2111.06184
Publikováno v:
Phys. Rev. A 102, 043306 (2020)
We study the properties of a magnetic dipolar Bose-Einstein condensate (BEC) in an elongated (cigar shaped) confining potential in the beyond quasi-one-dimensional (quasi-1D) regime. In this system the dipole-dipole interactions (DDIs) develop a mome
Externí odkaz:
http://arxiv.org/abs/2007.13946
Publikováno v:
Commun. Theor. Phys. 72, 085501 (2020)
We develop a variational theory for a dipolar condensate in an elongated (cigar shaped) confinement potential. Our formulation provides an effective one-dimensional extended meanfield theory for the ground state and its collective excitations. We app
Externí odkaz:
http://arxiv.org/abs/2004.09859
Publikováno v:
Quantum Collisions and Confinement of Atomic and Molecular Species, and Photons, Springer Proceedings in Physics 230, pp 211--221 (2019)
We examine the quantum Hall (QH) states of the optical lattices with square geometry using Bose-Hubbard model (BHM) in presence of artificial gauge field. In particular, we focus on the QH states for the flux value of $\alpha = 1/3$. For this, we use
Externí odkaz:
http://arxiv.org/abs/1911.08262
Publikováno v:
Phys. Rev. A 100, 053623 (2019)
We consider a minimal model to describe the quantum phases of ultracold dipolar bosons in two-dimensional (2D) square optical lattices. The model is a variation of the extended Bose-Hubbard model and apt to study the quantum phases arising from the v
Externí odkaz:
http://arxiv.org/abs/1906.07483
Publikováno v:
Phys. Rev. A 102, 013320 (2020)
We examine the zero and finite temperature phase diagrams of soft-core bosons of the extended Bose-Hubbard model on a square optical lattice. To study various quantum phases and their transitions we employ single-site and cluster Gutzwiller mean-fiel
Externí odkaz:
http://arxiv.org/abs/1904.12649
Publikováno v:
Phys. Rev. A 99, 053610 (2019)
We examine the effects of an artificial gauge field and finite temperature in a two-dimensional disordered Bose-Hubbard model. The disorder considered is diagonal and quenched in nature. A signature of disorder in the Bose-Hubbard model is the Bose g
Externí odkaz:
http://arxiv.org/abs/1807.00269
Publikováno v:
Comput. Phys. Commun. 256, 107288 (2020)
We develop a FORTRAN code to compute fluctuations in atomic condensates (FACt) by solving the Bogoliubov-de Gennes (BdG) equations for two component Bose-Einstein condensate (TBEC) in quasi two dimensions. The BdG equations are recast as matrix equat
Externí odkaz:
http://arxiv.org/abs/1806.01244