Abstract
We plan to continue investigating the many facets of the dynamics of Bose-Einstein condensates, exotic nuclei, and develop and apply the theory of quantum chaos. We also plan to study the topic of quantum turbulence. (AU)
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Arnaldo Gammal
CV Lattes
ResearcherID
ORCID
Universidade de São Paulo (USP). Instituto de Física (IF) (Institutional affiliation for the last research proposal) Birthplace: Brazil
graduate at Engenharia Eletrônica from Instituto Tecnológico de Aeronáutica (1986), master's in Physics at Universidade de São Paulo (1992) and Ph.D. at Physics at Universidade de São Paulo (1997). Presently is associate Professor at University of Sao Paulo. Has experience in Physics, acting on the following subjects: Bose-Einstein condensates, solitons, partial differential equations, coherence in atomic medium and matter-waves . (Source: Lattes Curriculum)
Research grants
- Quench dynamics of interacting bosons in 1D optical lattice, AV.EXT
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 co...
- Plane wave and stripe phases of Rasbha spin-orbit coupled Bose-Einstein condensates with Rabi coupling, AV.EXT
Abstract
We propose to study the ground state properties of harmonically trapped pseudo spin-1/2Bose-Einstein condensates in quasi-two dimensional setting with Rashba spin-orbit coupling and Rabi coupling from the numerical solutions of coupled Gross-Pitaevskii equations and to analyse the stability using Bogoliubov theory. In particular, we wish to investigate the role of the parameters, namely...
- Dynamics of many-body systems III, AP.TEM
Abstract
In this project we plan to continue our investigation of the collective and chaotic behaviors of many-body systems, be them the atomic nucleus, Bose-Einstein condensates of atoms or molecules or meso- and nanoscopic systems. Our project is a natural continuation of our previos two thematic projects which were quite successful. (AU)
(Only some records are available in English at this moment)
Scholarships in Brazil
- Many-body properties of Bose-Einstein condensates from multi configurational time-dependent Hartree method, BP.DR
Abstract
We are going to study Bose-Einstein Condensates (BEC) beyond Gross-Pitaevskii (GP) mean-field approach, pursuing novel methods that take in account the depletion of atoms from the same quantum state, absent in GP mean-field. These new methods are already being studied in what is called Multi Configurational Time-Dependent Hartree (MCTDH) whose can be used in the limit of stronger intera...
- Excitations of dipolar Bose-Einstein condensates, BP.PD
Abstract
In the present project we wish to investigate the excitations in dipolar Bose-Einstein condensates (BECs). In dipolar BECs, the atomic interaction has a long-range dipolar counterpart in addition to the usual contact interaction. The resulting Gross-Pitaevskii (GP) equation in this case is a partial integro-differential equation and special algorithms are required for its numerical sol...
- Bose-Einstein Condensate in a Hexagonal Optical Lattice, BP.DR
Abstract
Experiments of expansion of Bose-Einstein condensades in an optical lattices has been made by several research groups, showing the phase transition from superfluid (SF) to Mott-insulator (MI). This ph.D. project aims to describe how occurs the SF-MI transition using numerical methods of Quantum Monte-Carlo applied to the Bose-Hubbard model in a hexagonal optical lattice. Afterward we wi...
- Dynamics of ultracold atoms in optical potentials, BP.PD
(Only some records are available in English at this moment)
Scholarships abroad
- Phase diagram of mixtures of species in hexagonal optical lattices, BE.EP.DR
Abstract
Expansion experiments with Bose-Einstein condensates in optical lattices has been carrying out by several research groups, showing the phase transition from superfluid (SF) to Mott-insulator (MI). This sandwich Ph.D. project aims to describe the phase diagram of this systems when considering mixtures of atomic species in optical lattice with hexagonal symmetry using numerical methods of...
- Nonlinear interference of matter waves in supersonic BEC flows through non-uniform channels, BE.EP.PD
Abstract
The interference pattern generated by the interaction of two 1D rarefaction waves (RWs) was studied in [1]. However, only numerical solutions was presented. This problem can be solved analytically using the methods from [2] where the 1D dispersive shock wave (DSW) - RW interaction has analytical results. We propose a 2D analogue of this problem providing analytical and numerical results...
- Bose Einstein condensates: high density vortex formation, BE.PQ
Abstract
We are going to ivestigate the vortex formation at high densities using the slave-boson approach. This result in an integro-differential equation that reduces to the Gross-Pitaevkii equation at dilute regime. High density effects shall have effect at the critical angular velocity for vortex formation. This project was initiated with prof. Klaus Ziegler (Augsburg-Alemnha) during the ICAP...
Total / Available in English
| 1 / 1 | Ongoing research grants |
| 8 / 6 | Completed research grants |
| 1 / 1 | Ongoing scholarships in Brazil |
| 8 / 6 | Completed scholarships in Brazil |
| 5 / 3 | Completed scholarships abroad |
| 23 / 17 | All research grants and scholarships |
| Associated processes | |
(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)
| Publications | 25 |
| Citations | 63 |
| Cit./Article | 2.5 |
| Data from Web of Science | |
KUMAR, RAMAVARMARAJA KISHOR; SRIRAMAN, THANGARASU; FABRELLI, HENRIQUE; MURUGANANDAM, PAULSAMY; GAMMAL, ARNALDO. Three-dimensional vortex structures in a rotating dipolar Bose-Einstein condensate. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, v. 49, n. 15, AUG 14 2016. Web of Science Citations: 13. (14/01668-8)
DEPPMAN, AIRTON; MEGIAS, EUGENIO; MENEZES, DEBORA P.. Fractals, nonextensive statistics, and QCD. Physical Review D, v. 101, n. 3, FEB 19 2020. Web of Science Citations: 1. (16/17612-7)
ANDRADE, II, EVANDRO; DEPPMAN, AIRTON; MEGIAS, EUGENIO; MENEZES, DEBORA P.; DA SILVA, TIAGO NUNES. Bag-type model with fractal structure. Physical Review D, v. 101, n. 5, MAR 17 2020. Web of Science Citations: 0. (16/17612-7)
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. Web of Science Citations: 0. (16/19622-0)
LIMA, J. A. S.; DEPPMAN, A.. Tsallis meets Boltzmann: q-index for a finite ideal gas and its thermodynamic limit. Physical Review E, v. 101, n. 4, APR 23 2020. Web of Science Citations: 0. (11/51676-9, 16/17612-7)
KUMAR, RAMAVARMARAJA KISHOR; TOMIO, LAURO; GAMMAL, ARNALDO. Spatial separation of rotating binary Bose-Einstein condensates by tuning the dipolar interactions. Physical Review A, v. 99, n. 4, APR 4 2019. Web of Science Citations: 0. (14/01668-8, 16/17612-7)
LICCARDO, V.; MALHEIRO, M.; HUSSEIN, M. S.; CARLSON, B. V.; FREDERICO, T.. Nuclear processes in astrophysics: Recent progress. EUROPEAN PHYSICAL JOURNAL A, v. 54, n. 12, DEC 17 2018. Web of Science Citations: 4. (17/05660-0, 13/17696-8, 13/26258-4, 16/17612-7)
APPANNABABU, S.; LICHTENTHALER, R.; ALVAREZ, M. A. G.; RODRIGUEZ-GALLARDO, M.; LEPINE-SZILY, A.; PIRES, K. C. C.; SANTOS, O. C. B.; SILVA, U. U.; DE FARIA, P. N.; GUIMARAES, V; et al. Two-neutron transfer in the He-6 + Sn-120 reaction. Physical Review C, v. 99, n. 1, JAN 4 2019. Web of Science Citations: 2. (13/22100-7, 14/19666-1, 16/17612-7, 16/21434-7, 16/02863-4)
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. Web of Science Citations: 4. (14/01668-8, 16/01343-7, 12/00451-0)
DEPPMAN, AIRTON; MEGIAS, EUGENIO; MENEZES, DEBORA P.. Fractal structure of Yang-mills fields. PHYSICA SCRIPTA, v. 95, n. 9, SEP 2020. Web of Science Citations: 0. (16/17612-7)
KUMAR, RAMAVARMARAJA KISHOR; TOMIO, LAURO; MALOMED, BORIS A.; GAMMAL, ARNALDO. Vortex lattices in binary Bose-Einstein condensates with dipole-dipole interactions. Physical Review A, v. 96, n. 6, DEC 29 2017. Web of Science Citations: 10. (14/01668-8)
KUMAR, RAMAVARMARAJA KISHOR; MURUGANANDAM, PAULSAMY; TOMIO, LAURO; GAMMAL, ARNALDO. Miscibility in coupled dipolar and non-dipolar Bose-Einstein condensates. JOURNAL OF PHYSICS COMMUNICATIONS, v. 1, n. 3, OCT 2017. Web of Science Citations: 6. (14/01668-8)
KUMAR, R. KISHOR; GAMMAL, A.; TOMIO, LAURO. Mass-imbalanced Bose-Einstein condensed mixtures in rotating perturbed trap. Physics Letters A, v. 384, n. 22, AUG 6 2020. Web of Science Citations: 0. (16/17612-7)
ABDULLAEV, F. KH; GAMMAL, A.; KUMAR, R. K.; TOMIO, LAURO. Faraday waves and droplets in quasi-one-dimensional Bose gas mixtures. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, v. 52, n. 19, OCT 14 2019. Web of Science Citations: 0. (14/01668-8, 16/17612-7)
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. Web of Science Citations: 0. (16/19622-0)
ABDULLAEV, F. KH; BRTKA, M.; GAMMAL, A.; TOMIO, LAURO. Solitons and Josephson-type oscillations in Bose-Einstein condensates with spin-orbit coupling and time-varying Raman frequency. Physical Review A, v. 97, n. 5, MAY 17 2018. Web of Science Citations: 1. (16/17612-7, 17/05660-0)
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. Web of Science Citations: 14. (16/19622-0)
SABARI, SUBRAMANIYAN; KUMAR, R. KISHOR. Effect of an oscillating Gaussian obstacle in a dipolar Bose-Einstein condensate. EUROPEAN PHYSICAL JOURNAL D, v. 72, n. 3, MAR 20 2018. Web of Science Citations: 2. (14/01668-8)
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. Web of Science Citations: 3. (14/01668-8, 16/19622-0, 16/17612-7)
ZEVALLOS, E. O. N.; GUIMARAES, V; CARDOZO, E. N.; LUBIAN, J.; LINARES, R.; LICHTENTHALER FILHO, R.; PIRES, K. C. C.; SANTOS, O. C. B.; APPANNABABU, S.; CREMA, E.; et al. Elastic scattering of the B-12+Ni-58 system at near-barrier energies. Physical Review C, v. 99, n. 6, JUN 19 2019. Web of Science Citations: 1. (16/17612-7, 16/21434-7, 13/22100-7)
ABDULLAEV, F. KH; BRTKA, M.; GAMMAL, A.; TOMIO, LAURO. Solitons and Josephson-type oscillations in Bose-Einstein condensates with spin-orbit coupling and time-varying Raman frequency. Physical Review A, v. 97, n. 5, MAY 17 2018. Web of Science Citations: 1. (16/17612-7, 17/05660-0)
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. Web of Science Citations: 3. (14/01668-8, 16/19622-0, 16/17612-7)
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. Web of Science Citations: 0. (16/19622-0)
ANDRIATI, V, ALEX; GAMMAL, ARNALDO. Superfluid fraction of few bosons in an annular geometry in the presence of a rotating weak link. Physical Review A, v. 100, n. 6, DEC 12 2019. Web of Science Citations: 0. (16/17612-7)
GUIMARAES, V; CARDOZO, E. N.; SCARDUELLI, V. B.; LUBIAN, J.; KOLATA, J. J.; O'MALLEY, P. D.; BARDAYAN, D. W.; AGUILERA, E. F.; MARTINEZ-QUIROZ, E.; LIZCANO, D.; et al. Strong coupling effect in the elastic scattering of the( 10)C + Ni-58 system near barrier. Physical Review C, v. 100, n. 3, SEP 3 2019. Web of Science Citations: 0. (16/17612-7, 16/02863-4)
(References retrieved automatically from State of São Paulo Research Institutions)
KHAMIS, Eduardo Georges. Formação de sólitons em condensados de Bose-Einstein e em meios ópticos. Tese (Doutorado) - Instituto de Física. Universidade de São Paulo (USP). São Paulo. (07/06157-8)
COSTA, Karine Piacentini Coelho da. Condensados de Bose-Einstein em redes óticas: a transição superfluido-isolante de Mott em redes hexagonais e a classe de universalidade superfluido-vidro de Bose em 3D. Tese (Doutorado) - Instituto de Física. Universidade de São Paulo (USP). São Paulo. (11/09421-3)
GAMMAL, Arnaldo. O Termo Sigma Nuclear no Modelo de Skyrme. Tese (Doutorado) - Instituto de Física. Universidade de São Paulo (USP). São Paulo. (92/01961-6)
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