| DATE: |
2008-05-20 11:00 - 12:00 |
| PLACE: |
Kenkyuhonkan 2F Rm. 220 |
| TITLE: |
D3/D7 holographic gauge theory and chemical potential |
| CONTACT: |
tsuda |
| SPEAKER: |
Mr. Masafumi Ishihara (Kyushu Univ.) |
| LANGUAGE: |
English |
| ABSTRACT: |
N=2 supersymmetric Yang-Mills theory with flavor hypermultiplets at
finite temperature is studied for finite quark number density (n) by
a dual supergravity background with nontrivial dilaton and axion.
The quark and their number density n are introduced by embedding
a probe D7 brane. We find a critical value of the chemical potential
at the limit of n=0, and it coincides with the effective quark mass
given in theory for n=0. At this point, a transition of the D7
embedding configuration occurs between their two typical ones.
The phase diagrams of this transition are shown in the plane of
chemical potential versus temperature. In this phase transition,
the order parameter is considered as n. |
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