Výsledky vyhledávání - "Ma, Ping Nang"

Report

Fidelity susceptibility made simple: A unified quantum Monte Carlo approach

Autor: Wang, Lei, Liu, Ye-Hua, Imriška, Jakub, Ma, Ping Nang, Troyer, Matthias

Publikováno v: Phys. Rev. X 5, 031007 (2015)

The fidelity susceptibility is a general purpose probe of phase transitions. With its origin in quantum information and in the differential geometry perspective of quantum states, the fidelity susceptibility can indicate the presence of a phase trans

Externí odkaz: http://arxiv.org/abs/1502.06969

Zobrazit plný text záznamu

Report

Quantum Criticality from in-situ Density Imaging

Autor: Fang, Shiang, Chung, Chia-Ming, Ma, Ping Nang, Chen, Pochung, Wang, Daw-Wei

Publikováno v: Phys. Rev. A 83, 031605(R) (2011)

We perform large-scale Quantum Monte Carlo (QMC) simulations for strongly interacting bosons in a 2D optical lattice trap, and confirm an excellent agreement with the benchmarking in-situ density measurements by the Chicago group [1]. We further pres

Externí odkaz: http://arxiv.org/abs/1009.5155

Zobrazit plný text záznamu

Report

Measuring the equation of state of trapped ultracold bosonic systems in an optical lattice with in-situ density imaging

Autor: Ma, Ping Nang, Pollet, Lode, Troyer, Matthias

Publikováno v: Phys. Rev. A 82, 033627 (2010)

We analyze quantitatively how imaging techniques with single-site resolution allow to measure thermodynamical properties that cannot be inferred from time-of-light images for the trapped Bose-Hubbard model. If the normal state extends over a sufficie

Externí odkaz: http://arxiv.org/abs/1007.3529

Zobrazit plný text záznamu

Report

Influence of the trap shape on the superfluid-Mott transition in ultracold atomic gases

Autor: Ma, Ping Nang, Yang, Kai Yu, Pollet, Lode, Porto, J. V., Troyer, Matthias, Zhang, Fu Chun

Publikováno v: Phys. Rev. A 78, 023605 (2008)

The coexistence of superfluid and Mott insulator, due to the quadratic confinement potential in current optical lattice experiments, makes the accurate detection of the superfluid-Mott transition difficult. Studying alternative trapping potentials wh

Externí odkaz: http://arxiv.org/abs/0803.0546

Zobrazit plný text záznamu

Report

A classical picture of the role of vacancies and interstitials in Helium-4

Autor: Ma, Ping Nang, Pollet, Lode, Troyer, Matthias, Zhang, Fu Chun

Motivated by experimental hints for supersolidity in Helium-4, we perform Monte Carlo simulations of vacancies and interstitials in a classical two-and three-dimensional Lennard-Jones solid. We confirm a strong binding energy of vacancies which is of

Externí odkaz: http://arxiv.org/abs/0710.3940

Zobrazit plný text záznamu