Triangle Seminars
Tuesday, 5 Dec 2006
Towards Black Rings in AdS
Chethan Gowdigere
(ICTP, Trieste)
Wednesday, 6 Dec 2006
Solitons in ferromagnets
📍 London
Paul Sutcliffe
(Durham University)
Abstract:
I shall discuss various solitons which are possible in a ferromagnetic medium. Examples include domain walls, magnetic bubbles, vortex rings and Hopf solitons.
I shall discuss various solitons which are possible in a ferromagnetic medium. Examples include domain walls, magnetic bubbles, vortex rings and Hopf solitons.
Posted by: KCL
Quantum many-body systems: Simulation, entanglement, and complexity. A quantum information perspective
Jens Eisert
(Imperial College London)
Thursday, 7 Dec 2006
Open/closed string correspondence and D-brane decay in curved space
📍 London
Marco Baumgartl
(ETH Zuerich)
Abstract:
Boundary string field theory is an open string field theory which has been originally formulated on a flat target space. In this talk I present recent progress in the study of BSFT in curved space backgrounds. Starting from a factorization property of the associated path-integral, non-local open string couplings can be identified which implement shifts in the closed string background. This generally affects the stability of D-branes, which is analyzed with renormalisation group methods. Evidence for the conjectured flow towards D-branes in curved space is presented for the example of a SU(2) WZW model.
Boundary string field theory is an open string field theory which has been originally formulated on a flat target space. In this talk I present recent progress in the study of BSFT in curved space backgrounds. Starting from a factorization property of the associated path-integral, non-local open string couplings can be identified which implement shifts in the closed string background. This generally affects the stability of D-branes, which is analyzed with renormalisation group methods. Evidence for the conjectured flow towards D-branes in curved space is presented for the example of a SU(2) WZW model.
Posted by: KCL
Kahler Potentials for Chiral Matter in Calabi-Yau String
Joe Conlon
(DAMPT, Cambridge)
Abstract:
The Kahler metric for chiral matter fields plays a crucial role in the
computation of soft supersymmetry breaking terms in string
compactifications. Due to its non-holomorphic nature, this is difficult to
compute in Calabi-Yau backgrounds. I describe techniques that allow the
modular weights of the Kahler metric to be computed in IIB string
compactifications. This is done by relating the modular dependence
of the Kahler metric to that of the physical Yukawa couplings. I briefly
discuss the applications to soft terms and neutrino masses.
The Kahler metric for chiral matter fields plays a crucial role in the
computation of soft supersymmetry breaking terms in string
compactifications. Due to its non-holomorphic nature, this is difficult to
compute in Calabi-Yau backgrounds. I describe techniques that allow the
modular weights of the Kahler metric to be computed in IIB string
compactifications. This is done by relating the modular dependence
of the Kahler metric to that of the physical Yukawa couplings. I briefly
discuss the applications to soft terms and neutrino masses.
Posted by: IC
Boundary Conformal Field Theory and Ribbon Graphs: A Tool for Open/Closed String Dualities
Valeria Gili
(QMUL)
Friday, 8 Dec 2006
Higher-order corrections in string and M-theory, and generalised holonomy
Chris Pope
(Texas A M University)