Quench dynamics of interacting bosons in 1D optical lattice

• Grant number: 16/19622-0
• Support Opportunities: Research Grants - Visiting Researcher Grant - International
• Start date: June 15, 2017
• End date: June 14, 2018
• Field of knowledge: Physical Sciences and Mathematics - Physics - Atomic and Molecular Physics
• Principal Investigator: Arnaldo Gammal
• Grantee: Arnaldo Gammal
• Visiting researcher: Barnali Chakrabarti
• Visiting researcher institution: Presidency University, India
• Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

We propose to study the ground state properties the quench dynamics of the interacting bosons in optical lattice both for the deep and shallow. The usage of optical lattice of different height will allow us to study the whole regime of a single condensate to fragmented condensate. Moreover we shall demonstrate the fundamental correlation between the production of entropy, build up of correlation and loss of coherence in the system. As the correlation and coherence are now experimentally accessible, their connection to many-body entropies can be scrutinized to detect statistical relaxation and to prove the eigenstate thermalization hypothesis (ETH). We will utilize the recent recursive software implementation of the MCTDHB. (AU)

Scientific publications

(5)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BERA, S.; CHAKRABARTI, B.; GAMMAL, A.; TSATSOS, M. C.; LEKALA, M. L.; CHATTERJEE, B.; LEVEQUE, C.; LODE, A. U. J.. Sorting Fermionization from Crystallization in Many-Boson Wavefunctions. SCIENTIFIC REPORTS, v. 9, NOV 29 2019. (16/19622-0)

ROY, R.; GAMMAL, A.; TSATSOS, M. C.; CHATTERJEE, B.; CHAKRABARTI, B.; LODE, A. U. J.. Phases, many-body entropy measures, and coherence of interacting bosons in optical lattices. PHYSICAL REVIEW A, v. 97, n. 4, p. 10-pg., 2018-04-24. (16/19622-0)

ROY, R.; GAMMAL, A.; TSATSOS, M. C.; CHATTERJEE, B.; CHAKRABARTI, B.; LODE, A. U. J.. Phases, many-body entropy measures, and coherence of interacting bosons in optical lattices. Physical Review A, v. 97, n. 4, APR 24 2018. (16/19622-0)

BERA, S.; ROY, R.; GAMMAL, A.; CHAKRABARTI, B.; CHATTERJEE, B.. Probing relaxation dynamics of a few strongly correlated bosons in a 1D triple well optical lattice. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, v. 52, n. 21, NOV 14 2019. (16/19622-0)

KISHOR KUMAR, R.; CHAKRABARTI, B.; GAMMAL, A.. Information Entropy for a Two-Dimensional Rotating Bose-Einstein Condensate. JOURNAL OF LOW TEMPERATURE PHYSICS, v. 194, n. 1-2, p. 14-26, JAN 2019. (16/17612-7, 16/19622-0, 14/01668-8)