Fluctuations of Bose-Einstein Condensate

Journal Article · Mon Mar 31 23:00:00 EST 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.78.2686· OSTI ID:490192

Gajda, M ^[1]; Rzazewski, K ^[2]; Gajda, M; Rzazewski, K ^[3]

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1. Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02-668 Warsaw (Poland)
2. Center for Theoretical Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02-668 Warsaw (Poland)
3. College of Science, Aleja Lotnikow 32/46, 02-668 Warsaw (Poland)

We study the ground state occupation number and its fluctuations for the Bose-Einstein condensate of trapped atoms using the microcanonical ensemble. The analytic formulas are obtained with the help of the saddle point method. We show that microcanonical fluctuations below the critical temperature tend to zero and scale with the number of particles as 1/{radical}(N). {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 490192
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 14 Vol. 78; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ATOMS
BOSE-EINSTEIN CONDENSATION
CRITICAL TEMPERATURE
FLUCTUATIONS
GROUND STATES
SADDLE-POINT METHOD
TRAPPED-PARTICLE INSTABILITY