Dilute D-Instantons at Finite Temperature

Abstract

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.

45 pp, harvmac, typos corrected and references added

References in corpus (4)

• On Brane-Antibrane Forces
• Configurations of two D-instantons
• Vertex Operators for Super Yang-Mills and Multi D-Branes in Green-Schwarz Superstring
• Remarks on the Classical Size of D-Branes

Cited by in corpus (11)

• Heterotic / type I duality and D-brane instantons
• On Stringy Thresholds in SYM/AdS Thermodynamics
• Closed-String Tachyons and the Hagedorn Transition in AdS Space
• A note on supersymmetric Yang-Mills thermodynamics
• Bosonic D-branes at finite temperature with an external field
• On the SU(1,1) Thermal Group of Bosonic Strings and D-Branes
• Strings at Finite Temperature: Wilson Lines, Free Energies, and the Thermal Landscape
• Entropy of Bosonic Open String and Boundary Conditions
• Matrix Strings, Compactification Scales and Hagedorn Transition
• Non-perturbative Thermodynamics in Matrix String Theory
• Thermodynamics and Tachyon Condensation of the Dressed-Dynamical Unstable D$p$-branes