Triangle Seminars
Monday, 1 Jun 2009
Numerical metrics on moduli spaces of Calabi-Yau manifolds
Sergio Lukic
(Imperial College)
Abstract:
I will explain two algorithms that compute numerically the Weil-Petersson metric on the moduli space of polarized Calabi-Yau manifolds. I will show some explicit examples. Finally, I will outline some applications of these techniques in the physics of Calabi-Yau compactifications of string theory.
I will explain two algorithms that compute numerically the Weil-Petersson metric on the moduli space of polarized Calabi-Yau manifolds. I will show some explicit examples. Finally, I will outline some applications of these techniques in the physics of Calabi-Yau compactifications of string theory.
Posted by: IC
Tuesday, 2 Jun 2009
Quasi-classical quantisation of AdS4 x CP3 superstring and giant magnons
Igor Shenderovich
(St Petersburg)
Abstract:
We discuss quasi-classical quantization of AdS4 x CP3
superstring using the algebraic curve techinque. We exemplify this procedure
on some configurations so called giant magnons. It turns out that there are
two types of configurations and they are quantizied in slightly different
ways. Also we discuss testing AdS/CFT correspondence in this case.
We discuss quasi-classical quantization of AdS4 x CP3
superstring using the algebraic curve techinque. We exemplify this procedure
on some configurations so called giant magnons. It turns out that there are
two types of configurations and they are quantizied in slightly different
ways. Also we discuss testing AdS/CFT correspondence in this case.
Posted by: IC
World-sheet dualities for superspace sigma models
📍 London
Thomas Quella
(University of Amsterdam)
Thursday, 4 Jun 2009
Black hole microstate geometries and the information paradox
Iosif Bena
(Saclay)
Stringy modifications to spacetime structure and the CMB
Subodh Patil
(Humboldt University)
Abstract:
In this talk, we will review recent work which asks the question, what, if any effects stringy modifications to geometry might have on the predictions of inflation? We couch our discussion within two well motivated frameworks– non-commutative geometry (likely to be present during brane inflation), and modifications to mode propagation coming from a field theory representation of the stringy uncertainty principle. In the former case, we find that UV/IR mode mixing can imprint potentially observable signatures onto the CMB independent of the scale of inflation. In the latter case, we analytically compute corrections, and comment on the possibility of observing these in the fortunate circumstance that we happen to find ourselves in a weakly coupled corner of moduli space.
In this talk, we will review recent work which asks the question, what, if any effects stringy modifications to geometry might have on the predictions of inflation? We couch our discussion within two well motivated frameworks– non-commutative geometry (likely to be present during brane inflation), and modifications to mode propagation coming from a field theory representation of the stringy uncertainty principle. In the former case, we find that UV/IR mode mixing can imprint potentially observable signatures onto the CMB independent of the scale of inflation. In the latter case, we analytically compute corrections, and comment on the possibility of observing these in the fortunate circumstance that we happen to find ourselves in a weakly coupled corner of moduli space.
Posted by: IC