Dilute D-instantons at finite temperature

Dilute D-Instantons at Finite Temperature

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 stri...

Instantons describing tunneling between magnetic states at finite temperature

Casimir effect for a dilute dielectric ball at finite temperature

The Casimir effect at finite temperature is investigated for a dilute dielectric ball; i.e., the relevant internal and free energies are calculated. The starting point in this study is a rigorous general expression for the internal energy of a system of noninteracting oscillators in terms of the sum over the Matsubara frequencies. Summation over the angular momentum values is accomplished in a ...

Bosonic D-Branes at Finite Temperature

We derive the finite temperature description of bosonic D-branes in the thermo field approach. The results might be relevant to the study of thermical properties of D-brane systems. During the past several years, researches on the properties of D-branes, viewed either as solitons of low energy field theories [1] or as states in perturbative spectra of strings [2], has continued to grow unabated...

D-Branes at Finite Temperature in TFD

We review the construction of the D-branes at finite temperature as boundary states in the Fock space of thermal perturbative closed string. This is a talk presented by I. V. V. at Common Trends in Cosmology and Particle Physics June 2003, Balatonfüred, Hungary. [email protected] [email protected] [email protected]