1997/01/31 by J.L.F. Barbón, J. L. F. Barbon, Miguel Angel Vázquez-Mozo +1 · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Cold Atom Physics and Bose-Einstein Condensates #Quantum, superfluid, helium dynamics #hep-th
paper · pdf · doi:10.1016/s0550-3213(97)00256-3
published as Nucl.Phys. B497 (1997) 236-274 · 45 pp, harvmac, typos corrected and references added
arxiv created 1997/04/28 · openalex publication_date 1997/07/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We discuss Dirichlet instanton effects on type-IIB string Thermodynamics. We review some general properties of dilute D-instanton gases and use the low-energy supergravity solutions to define the normalization of the instanton measure, as well as the effects of long-range interactions. Thermal singularities in the single-instanton sector are due to tachyonic winding modes of Dirichlet open strings. Purely bosonic D-instantons induce in this way hard infrared singularities that ruin the weak-coupling expansion in the microcanonical ensemble. However, type-IIB D-instantons, give smooth contributions at the Hagedorn temperature, and the induced mass and coupling of the axion field are insufficient to change the first-order character of the phase transition in the mean field approximation.