Thermal amplification and melting of phases in spin–orbit-coupled spin-1 Bose–Einstein condensates
We implement the Hartree–Fock–Bogoliubov theory with the Popov approximation for a homogeneous Raman-induced spin–orbit-coupled spin-1 Bose–Einstein condensate and investigate the effects of finite temperature ( T ) on the ground-state phase diagram. We calculate the roton gap as a function of Raman...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/adc6ae |
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| author | Ritu Rajat Arko Roy Sandeep Gautam |
| author_facet | Ritu Rajat Arko Roy Sandeep Gautam |
| author_sort | Ritu |
| collection | DOAJ |
| description | We implement the Hartree–Fock–Bogoliubov theory with the Popov approximation for a homogeneous Raman-induced spin–orbit-coupled spin-1 Bose–Einstein condensate and investigate the effects of finite temperature ( T ) on the ground-state phase diagram. We calculate the roton gap as a function of Raman coupling (Ω) or quadratic Zeeman field strength ( ε ) to extract the critical points separating the supersolid stripe phase from the plane wave or zero-momentum phase at finite temperatures. We present a few representative finite-temperature phase diagrams for the system in the $T-\Omega$ and $T-\epsilon$ planes. Our observations indicate that the supersolid stripe phase melts at finite temperatures. We also discuss the contrasting roles of quantum and thermal fluctuations in shifting the phase boundary separating the supersolid stripe from the plane-wave phase. |
| format | Article |
| id | doaj-art-a1fcb8bbf9ef4d5dbbcb2612ef028188 |
| institution | DOAJ |
| issn | 1367-2630 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj-art-a1fcb8bbf9ef4d5dbbcb2612ef0281882025-08-20T03:17:34ZengIOP PublishingNew Journal of Physics1367-26302025-01-0127404300510.1088/1367-2630/adc6aeThermal amplification and melting of phases in spin–orbit-coupled spin-1 Bose–Einstein condensatesRitu0Rajat1https://orcid.org/0000-0002-4882-1313Arko Roy2https://orcid.org/0000-0003-4459-2880Sandeep Gautam3https://orcid.org/0000-0002-9864-6138Department of Physics, Indian Institute of Technology Ropar , Rupnagar 140001, Punjab, IndiaDepartment of Physics, Indian Institute of Technology Ropar , Rupnagar 140001, Punjab, IndiaSchool of Physical Sciences, Indian Institute of Technology Mandi , Mandi, Himachal Pradesh 175075, IndiaDepartment of Physics, Indian Institute of Technology Ropar , Rupnagar 140001, Punjab, IndiaWe implement the Hartree–Fock–Bogoliubov theory with the Popov approximation for a homogeneous Raman-induced spin–orbit-coupled spin-1 Bose–Einstein condensate and investigate the effects of finite temperature ( T ) on the ground-state phase diagram. We calculate the roton gap as a function of Raman coupling (Ω) or quadratic Zeeman field strength ( ε ) to extract the critical points separating the supersolid stripe phase from the plane wave or zero-momentum phase at finite temperatures. We present a few representative finite-temperature phase diagrams for the system in the $T-\Omega$ and $T-\epsilon$ planes. Our observations indicate that the supersolid stripe phase melts at finite temperatures. We also discuss the contrasting roles of quantum and thermal fluctuations in shifting the phase boundary separating the supersolid stripe from the plane-wave phase.https://doi.org/10.1088/1367-2630/adc6aespin–orbit-couplingBose–Einstein condensateHartree–Fock–Bogoliubov theoryelementary excitationsquantum and thermal fluctuations |
| spellingShingle | Ritu Rajat Arko Roy Sandeep Gautam Thermal amplification and melting of phases in spin–orbit-coupled spin-1 Bose–Einstein condensates New Journal of Physics spin–orbit-coupling Bose–Einstein condensate Hartree–Fock–Bogoliubov theory elementary excitations quantum and thermal fluctuations |
| title | Thermal amplification and melting of phases in spin–orbit-coupled spin-1 Bose–Einstein condensates |
| title_full | Thermal amplification and melting of phases in spin–orbit-coupled spin-1 Bose–Einstein condensates |
| title_fullStr | Thermal amplification and melting of phases in spin–orbit-coupled spin-1 Bose–Einstein condensates |
| title_full_unstemmed | Thermal amplification and melting of phases in spin–orbit-coupled spin-1 Bose–Einstein condensates |
| title_short | Thermal amplification and melting of phases in spin–orbit-coupled spin-1 Bose–Einstein condensates |
| title_sort | thermal amplification and melting of phases in spin orbit coupled spin 1 bose einstein condensates |
| topic | spin–orbit-coupling Bose–Einstein condensate Hartree–Fock–Bogoliubov theory elementary excitations quantum and thermal fluctuations |
| url | https://doi.org/10.1088/1367-2630/adc6ae |
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