Isentropes of spin-1 bosons in an optical lattice

Journal Article · Mon Mar 15 04:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.033609· OSTI ID:21408469

Mahmud, K W; Scalettar, R T ^[1]; Batrouni, G G ^[2]

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1. Physics Department, University of California, Davis, California 95616 (United States)
2. INLN, Universite de Nice-Sophia Antipolis, CNRS, 1361 route des Lucioles, F-06560 Valbonne (France)

We analyze the effects of adiabatic ramping of optical lattices on the temperature of spin-1 bosons in a homogeneous lattice. Using mean-field theory, we present the isentropes in the temperature-interaction strength (T,U{sub 0}) plane for ferromagnetic, antiferromagnetic, and zero spin couplings. Following the isentropic lines, temperature changes can be determined during adiabatic loading of current experiments. We show that the heating-cooling separatrix lies on the superfluid-Mott phase boundary with cooling occurring within the superfluid and heating in the Mott insulator and quantify the effects of spin coupling on the heating rate. We find that the mean-field isentropes for low initial entropy terminate at the superfluid-Mott-insulator phase boundary.

• OSTI ID: 21408469
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 81; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANGULAR MOMENTUM
ANTIFERROMAGNETISM
BOSONS
COOLING
COUPLING
ENTROPY
HEATING
HEATING RATE
ISENTROPIC PROCESSES
MAGNETISM
MEAN-FIELD THEORY
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
SPIN
SUPERFLUIDITY
THERMODYNAMIC PROPERTIES