Faraday waves and droplets in quasi-one-dimensional Bose gas mixtures

Author(s)

Abdullaev, F. Kh ^{[1, 2]} ; Gammal, A. ^[3] ; Kumar, R. K. ^[3] ; Tomio, Lauro ^{[4, 1]}

Affiliation

^[1] Univ Estadual Paulista, Inst Fis Teor, BR-01140700 Sao Paulo - Brazil

^[2] Uzbek Acad Sci, Phys Tech Inst, Tashkent - Uzbekistan

^[3] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo - Brazil

^[4] DCTA, Inst Tecnol Aeronaut, BR-12228900 Sao Jose Dos Campos - Brazil

• Document type: Journal article
• Source: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS; v. 52, n. 19 OCT 14 2019.
• Web of Science Citations: 0

Abstract

Faraday waves in mixtures of Bose gases are studied by taking into account quantum fluctuations beyond the Gross-Pitaevskii mean-field formalism with the Lee-Huang-Yang term. For that, a Bose-Einstein condensed binary atomic mixture is assumed trapped in cigar-type geometry, having the inter-and intra-species scattering lengths periodically varying in time. The period of the Faraday patterns is shown to be quite sensitive to the estimated value obtained by the beyond mean-field contribution, which can be used to measure quantum fluctuations in the ground state of the quasi-one-dimensional mixture. By studying the influence of the above nonlinear periodic modulations on quantum droplet dynamics, we also show that nonlinear resonances are excited in the oscillation widths of the quantum droplets. Variational predictions confirm numerical simulations for the corresponding formalism. (AU)

• FAPESP's process: 14/01668-8 - Excitations of dipolar Bose-Einstein condensates
• Grantee: Kishor Kumar Ramavarmaraja
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 16/17612-7 - Dynamics of many-body systems IV
• Grantee: Arnaldo Gammal
• Support Opportunities: Research Projects - Thematic Grants