Thermal magnetized D-branes on $R^{1,p}\times T^{d-p-1}$ in the generalized Thermo Field Dynamics approach

R. Nardi; M. A. Santos; I. V. Vancea

doi:10.1088/1751-8113/44/23/235403

paper

Thermal magnetized D-branes on $R^{1, p} \times T^{d - p - 1}$ in the generalized Thermo Field Dynamics approach

arXiv:1011.0574 · doi:10.1088/1751-8113/44/23/235403

Abstract

We construct the D-brane states at finite temperature in thermal equilibrium in the $R^{1, p} \times T^{d - p - 1}$ spacetime in the presence of cold (unthermalized) Kalb-Ramond (KR) and U(1) gauge potential background. To this end, we first generalize the Thermo Field Dynamics (TFD) to wrapped closed strings. This generalization is consistent with the spatial translation invariance on the string world-sheet. Next, we determine the thermal string vacuum and define the entropy operator. From these data we calculate the entropy of the closed string and the free energy. Finally, we define the thermal D-brane states in $R^{1, p} \times T^{d - p - 1}$ in the presence of cold constant KR field and U(1) gauge potential as the boundary states of the thermal closed string and compute their entropy.

arXiv commentMinor error and misprints corrected. 22 pages

Thermal magnetized D-branes on $R^{1, p} \times T^{d - p - 1}$ in the generalized Thermo Field Dynamics approach

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Thermal magnetized D-branes on R1,p×Td−p−1 in the generalized Thermo Field Dynamics approach

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Thermal magnetized D-branes on $R^{1, p} \times T^{d - p - 1}$ in the generalized Thermo Field Dynamics approach