Triangle Seminars
Monday, 6 Mar 2006
Heterotic MSSM
Yang-Hui He
(Oxford)
Abstract:
We show the existence of an N=1 supersymmetric vacuum in
string theory whose observable sector has exactly the matter content of
the MSSM without exotic particles and vector-like pairs of any type. This
is done so by compactifying the E_8 x E_8 heterotic string on a
Calabi-Yau threefold endowed with an SU(4) vector bundle which has been
constructed after extensive search. In addition, we discuss the Yukawa
couplings
and Higgs mu-terms in this model.
We show the existence of an N=1 supersymmetric vacuum in
string theory whose observable sector has exactly the matter content of
the MSSM without exotic particles and vector-like pairs of any type. This
is done so by compactifying the E_8 x E_8 heterotic string on a
Calabi-Yau threefold endowed with an SU(4) vector bundle which has been
constructed after extensive search. In addition, we discuss the Yukawa
couplings
and Higgs mu-terms in this model.
Posted by: IC
Tuesday, 7 Mar 2006
tba
Johanna Erdmenger
(Max Planck Munich)
Wednesday, 8 Mar 2006
Functional Bosonisation in Luttinger Liquid
Igor Lerner
(Birmingham)
Abstract:
We develop a functional integral formalism to find an exact representation for the electron Green function of the Luttinger liquid (LL) in the presence of a single backscattering impurity. This allows us to reproduce results (well known from the bosonization techniques) for the suppression of the electron local density of states (LDoS) at the position of the impurity and for the Friedel
oscillations at finite temperature. In addition, we have extracted from the exact representation an analytic dependence of LDoS on the distance from the impurity and shown how it crosses over to that for the pure LL.
We develop a functional integral formalism to find an exact representation for the electron Green function of the Luttinger liquid (LL) in the presence of a single backscattering impurity. This allows us to reproduce results (well known from the bosonization techniques) for the suppression of the electron local density of states (LDoS) at the position of the impurity and for the Friedel
oscillations at finite temperature. In addition, we have extracted from the exact representation an analytic dependence of LDoS on the distance from the impurity and shown how it crosses over to that for the pure LL.
Posted by: brunel
Inflation in AdS - CFT
📍 London
Mukund Rangamani
(Durham)
Identification of the stress-energy tensor in SLE and related processes
Valentina Riva
(Oxford)
Abstract:
In the first part of the talk, I will briefly review two complementary methods for the analytical study of two-dimensional critical phenomena: Conformal Field Theory (CFT) and Stochastic Loewner Evolution (SLE). I will then discuss some recent progress in understanding their connection, via the identification of some probabilities of SLE with correlation functions involving the bulk stress-energy tensor in CFT.
In the first part of the talk, I will briefly review two complementary methods for the analytical study of two-dimensional critical phenomena: Conformal Field Theory (CFT) and Stochastic Loewner Evolution (SLE). I will then discuss some recent progress in understanding their connection, via the identification of some probabilities of SLE with correlation functions involving the bulk stress-energy tensor in CFT.
Posted by: CityU
Thursday, 9 Mar 2006
M5-brane Geometry of Fermionic Open Strings
Neil Lambert
(KCL)
Topological membranes on G2-manifolds
Maxim Zabzine
(HIS)
Abstract:
I will review the recent developments in topological membrane theory. In particular I will discuss the formulation of topological membrane theory on G2-manifolds and its role in the topological M-theory. The reduction to topological strings will be presented.
I will review the recent developments in topological membrane theory. In particular I will discuss the formulation of topological membrane theory on G2-manifolds and its role in the topological M-theory. The reduction to topological strings will be presented.
Posted by: IC
The Soliton: Wave or Particle?
📍 London
Michael Atiyah
(University of Edinburgh)
Abstract:
Registration requested. For further details refer to
http://www.iee.org/events/kelvin.cfm
Registration requested. For further details refer to
http://www.iee.org/events/kelvin.cfm
Posted by: KCL
Friday, 10 Mar 2006
Perspectives in Mathematical and Theoretical Physics
Various speakers
(n/a)
Abstract:
Meeting of the IoP Mathematical and Theoretical Physics Group,
to be held at Imperial College on the 10th and 11th of March.
Registration requested. Details can be found here: http://groups.iop.org/MP/perspectives.html
Meeting of the IoP Mathematical and Theoretical Physics Group,
to be held at Imperial College on the 10th and 11th of March.
Registration requested. Details can be found here: http://groups.iop.org/MP/perspectives.html
Posted by: KCL