Triangle Seminars
Monday, 1 Nov 2004
Towards Quantum Dielectric Branes: Curvature Corrections in Abelian Beta Function and Nonabelian Born-Infeld Action
📍 London
Pedro Bordalo
(King's College)
Abstract:
We compute the beta function at 2 loops for an open string gauge
field F in any (parallelizable) curved background. The beta function is
exact in F. We discuss the implications of this result to curvature
corrections to the Born - Infeld action. Taking the large F limit, we
relate these corrections to the equations of motion for D0-branes in
curved backgrounds, eg. to corrections to the dielectric effect.
We compute the beta function at 2 loops for an open string gauge
field F in any (parallelizable) curved background. The beta function is
exact in F. We discuss the implications of this result to curvature
corrections to the Born - Infeld action. Taking the large F limit, we
relate these corrections to the equations of motion for D0-branes in
curved backgrounds, eg. to corrections to the dielectric effect.
Posted by: KCL
Wednesday, 3 Nov 2004
The Bethe ansatz and conformal field theory
📍 London
Werner Nahm
(Dublin Institute for Advanced Studies)
Abstract:
The Bethe ansatz for integrable quantum field theories in two dimensions may well be exact. It can be checked in the conformal limit, where it yields interesting character identities with deep links to algebraic K-theory.
The Bethe ansatz for integrable quantum field theories in two dimensions may well be exact. It can be checked in the conformal limit, where it yields interesting character identities with deep links to algebraic K-theory.
Posted by: KCL
Thursday, 4 Nov 2004
TBA
David Seery
(QMW)
Holographic cubic vertex in the pp-wave
Sangmin Lee
(IC)