Study of properties of Bose-Einstein Condensate: dipolar atoms and condensate of fermions

• Grant number: 12/00451-0
• Support Opportunities: Research Projects - Thematic Grants
• Duration: May 01, 2012 - April 30, 2018
• Field of knowledge: Physical Sciences and Mathematics - Physics - Atomic and Molecular Physics
• Principal Investigator: Sadhan Kumar Adhikari
• Grantee: Sadhan Kumar Adhikari
• Host Institution: Instituto de Física Teórica (IFT). Universidade Estadual Paulista (UNESP). Campus de São Paulo. São Paulo , SP, Brazil
• Associated grant(s): 14/07795-1 - Few-body systems in the low-energy regime: antimatter physics of protonium formation and four-atomic HD+H2 and HD+HD scattering at cold and ultra-cold temperatures, AV.EXT
• Associated scholarship(s): 13/07213-0 - Static and dynamical properties of spinor condensates, BP.PD; 12/21871-7 - Study on properties of dipolar Bose-Einstein Condensates, BP.PD

Abstract

We will study the static and dynamic properties of a trapped Bose-Einstein condensate. A conventional condensate has only aweak atomic interaction of short range. The study of Bose-Einstein condensates will be extended to include condensates of dipolar bosonic atoms and also of fermionic atoms. A Bose-Einstein condensate of dipolar atoms has long-range anisotropic dipolar interaction and has distinct stability properties and can lead to the formation of stable soliton in one and two spatial dimensions only under the action of a weak periodic potential of optical lattice. In the propagation of sound and the collapse of dipolar condensates, we have the manifestation ofanisotropic interaction. The sound travels at different speeds in different directions. The soliton may also have an anisotropic structure. Because of the Pauli principle the condensate of fermions is more stable and allows the study in the region of strong interaction. Various topics of trapped condensate will be studied, such as the formation of solitons and vortices, propagation of sound and shock wave, the strong interaction limit, dynamic oscillation,coupled interacting condensates, collapse, etc. We will study these issues using a time-dependent mean-field formalism. In the case of weak interaction this procedure reduces to the Gross-Pitaevskii equation. We will solve the mean-field equation numerically and also using the variational approximation to study the properties of the condensates. (AU)

Scientific publications

(26)

(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)

ADHIKARR, S. K.. Phase separation of vector solitons in spin-orbit-coupled spin-1 condensates. Physical Review A, v. 100, n. 6, DEC 6 2019. (12/00451-0, 13/07213-0)

KUMAR, RAMAVARMARAJA KISHOR; LONCAR, VLADIMIR; MURUGANANDAM, PAULSAMY; ADHIKARI, SADHAN K.; BALAZ, ANTUN. C and Fortran OpenMP programs for rotating Bose-Einstein condensates. COMPUTER PHYSICS COMMUNICATIONS, v. 240, p. 74-82, JUL 2019. (16/01343-7, 12/00451-0, 14/01668-8)

GAUTAM, SANDEEP; ADHIKARI, S. K.. Mobile vector soliton in a spin-orbit coupled spin-1 condensate. Laser Physics Letters, v. 12, n. 4, APR 2015. (12/00451-0, 13/07213-0)

GAUTAM, SANDEEP; ADHIKARI, S. K.. Fractional-charge vortex in a spinor Bose-Einstein condensate. Physical Review A, v. 93, n. 1, JAN 29 2016. (12/00451-0, 13/07213-0)

LONCAR, VLADIMIR; BALAZ, ANTUN; BOOJEVIC, ALEKSANDAR; SKRBIC, SRDJAN; MURUGANANDAM, PAULSAMY; ADHIKARI, SADHAN K.. CUDA programs for solving the time-dependent dipolar Gross-Pitaevskii equation in an anisotropic trap. COMPUTER PHYSICS COMMUNICATIONS, v. 200, p. 406-410, MAR 2016. (12/00451-0)

GAUTAM, SANDEEP; ADHIKARI, S. K.. Vector solitons in a spin-orbit-coupled spin-2 Bose-Einstein condensate. Physical Review A, v. 91, n. 6, JUN 15 2015. (12/00451-0, 13/07213-0)

YOUNG-S, LUIS E.; MURUGANANDAM, PAULSAMY; ADHIKARI, SADHAN K.; LONCAR, VLADIMIR; VUDRAGOVIC, DUSAN; BALAZ, ANTUN. OpenMP GNU and Intel Fortran programs for solving the time-dependent Gross-Pitaevskii equation. COMPUTER PHYSICS COMMUNICATIONS, v. 220, p. 503-506, NOV 2017. (12/00451-0)

LONCAR, VLADIMIR; YOUNG-S, LUIS E.; SKRBIC, SRDJAN; MURUGANANDAM, PAULSAMY; ADHIKARI, SADHAN K.; BALAZ, ANTUN. OpenMP, OpenMP/MPI, and CUDA/MPI C programs for solving the time-dependent dipolar Gross-Pitaevskii equation. COMPUTER PHYSICS COMMUNICATIONS, v. 209, p. 190-196, DEC 2016. (14/16363-8, 12/00451-0, 12/21871-7)

ADHIKARI, S. K.. Stable and mobile two-dimensional dipolar ring-dark-in-bright Bose-Einstein condensate soliton. Laser Physics Letters, v. 13, n. 3, MAR 2016. (12/00451-0)

ADHIKARI, S. K.. Improved effective-range expansions for small and large values of scattering length. European Journal of Physics, v. 39, n. 5, SEP 2018. (16/01343-7, 12/00451-0)

GAUTAM, SANDEEP; ADHIKARI, S. K.. Three-dimensional vortex-bright solitons in a spin-orbit-coupled spin-1 condensate. Physical Review A, v. 97, n. 1, JAN 25 2018. (16/01343-7, 12/00451-0)

ADHIKARI, S. K.. Elastic collision and breather formation of spatiotemporal vortex light bullets in a cubic-quintic nonlinear medium. LASER PHYSICS LETTERS, v. 14, n. 6, JUN 2017. (12/00451-0)

ADHIKARI, S. K.; SALASNICH, L.. Vortex lattice in the crossover of a Bose gas from weak coupling to unitarity. SCIENTIFIC REPORTS, v. 8, JUN 11 2018. (16/01343-7, 12/00451-0)

ADHIKARI, S. K.. A self-bound matter-wave boson-fermion quantum ball. LASER PHYSICS LETTERS, v. 15, n. 9, SEP 2018. (16/01343-7, 12/00451-0)

ADHIKARI, S. K.. Statics and dynamics of a self-bound dipolar matter-wave droplet. Laser Physics Letters, v. 14, n. 2, FEB 2017. (12/00451-0)

GAUTAM, SANDEEP; ADHIKARI, S. K.. Vortex-bright solitons in a spin-orbit-coupled spin-1 condensate. Physical Review A, v. 95, n. 1, JAN 9 2017. (13/07213-0, 12/00451-0)

ADHIKARI, S. K.. Statics and dynamics of a self-bound matter-wave quantum ball. Physical Review A, v. 95, n. 2, FEB 9 2017. (12/00451-0)

GAUTAM, SANDEEP; ADHIKARI, S. K.. Analytic models for the density of a ground-state spinor condensate. Physical Review A, v. 92, n. 2, AUG 12 2015. (12/00451-0, 13/07213-0)

ADHIKARI, S. K.. Symmetry breaking, Josephson oscillation and self-trapping in a self-bound three-dimensional quantum ball. SCIENTIFIC REPORTS, v. 7, NOV 22 2017. (12/00451-0)

ADHIKARI, S. K.. Elastic collision and molecule formation of spatiotemporal light bullets in a cubic-quintic nonlinear medium. Physical Review E, v. 94, n. 3, SEP 26 2016. (12/00451-0)

ADHIKARI, S. K.. Two-dimensional bright and dark-in-bright dipolar Bose-Einstein condensate solitons on a one-dimensional optical lattice. Laser Physics Letters, v. 13, n. 8, AUG 2016. (12/00451-0)

KUMAR, R. KISHOR; YOUNG-S, LUIS E.; VUDRAGOVIC, DUSAN; BALAZ, ANTUN; MURUGANANDAM, PAULSAMY; ADHIKARI, S. K.. Fortran and C programs for the time-dependent dipolar Gross-Pitaevskii equation in an anisotropic trap. COMPUTER PHYSICS COMMUNICATIONS, v. 195, p. 117-128, OCT 2015. (12/00451-0, 12/21871-7)

SATARIC, BOGDAN; SLAVNIC, VLADIMIR; BELIC, ALEKSANDAR; BALAZ, ANTUN; MURUGANANDAM, PAULSAMY; ADHIKARI, SADHAN K.. Hybrid OpenMP/MPI programs for solving the time-dependent Gross-Pitaevskii equation in a fully anisotropic trap. COMPUTER PHYSICS COMMUNICATIONS, v. 200, p. 411-417, MAR 2016. (12/00451-0)

YOUNG-S., LUIS E.; VUDRAGOVIC, DUGAN; MURUGANANDAM, PAULSAMY; ADHIKARI, SADHAN K.; BALAZ, ANTUN. OpenMP Fortran and C programs for solving the time-dependent Gross-Pitaevskii equation in an anisotropic trap. COMPUTER PHYSICS COMMUNICATIONS, v. 204, p. 209-213, JUL 2016. (14/16363-8, 12/00451-0, 12/21871-7)

GAUTAM, SANDEEP; ADHIKARI, S. K.. Spontaneous symmetry breaking in a spin-orbit-coupled f=2 spinor condensate. Physical Review A, v. 91, n. 1, JAN 23 2015. (12/00451-0, 13/07213-0)

ADHIKARI, S. K.. Stable spatial and spatiotemporal optical soliton in the core of an optical vortex. Physical Review E, v. 92, n. 4, OCT 29 2015. (12/00451-0)