Twenty-Fourth Meeting of the North British Mathematical Physics Seminar
The twenty-fourth meeting of the North British Mathematical
Physics Seminar will be held on Wednesday 8 July
2009 in Durham, in the Derman Christopherson Room of the Calman Early
Learning Centre, next to the Department of
Mathematical Sciences.
These
people have so far said they intend to come.
Programme
11:00-11:30
Coffee (in the Maths Dept, room CM211)
11:30-12:25
Richard Ward
(Durham)
The talk deals with periodic arrays of BPS monopoles: either
singly-periodic (monopole chains), or doubly-periodic (monopole
sheets or walls). In the first half, we see how partial information
about the geometry of the 2-monopole-chain moduli space --- an "ALG"
gravitational instanton --- relates to the scattering of monopole
chains. In the second half, I shall review monopole walls, and relate
them to recent work on monopole bags.
13:45-14:40
Anatoly Konechny
(Heriot-Watt)
Conformal perturbation theory beyond the leading order
14:45-15:40
Rafael Nepomechie
(Miami)
Exact S-matrices play a fundamental role in integrable 1+1 dimensional
relativistic QFTs. This is also true in AdS_5/CFT_4. Indeed, an
all-loops S-matrix has been proposed which leads to all-loops
asymptotic Bethe ansatz equations and to exact finite-size results.
In the recently-discovered AdS_4/CFT_3 correspondence, an exact
S-matrix is again expected to play a fundamental role. This talk
reviews a proposal for this S-matrix and some checks on its validity.
(Based on joint work with Changrim Ahn.)
16:30-16:55
Chih-Hao Fu
(Durham)
It has been shown that the CSW rules for gluon scattering amplitudes
can be accounted for by canonically transformed Yang-Mills lagrangian.
We extend the method to N=1 and N=4 SYM to generate the corresponding
rules for supersymmetric theories. Vertices are found to agree with
the formula for MHV super-amplitudes.
17:00-17:25
Mike Gillard
(Durham)
Volume-preserving gradient flow
Practical Information
Train information can be obtained here.
For directions to the Department of Mathematical Sciences
click here,
here or here.
The Calman Learning Centre is the big round building just next
door; the Derman Christopherson Room is on the top floor.
Tea, coffee and biscuits will be provided free of charge. There
will be a sandwich lunch for which participants might be charged
(depending on funding).
Limited funds are available to help with travel expenses of
participants with no other source of funding. We hope that this
will encourage postgraduate students and postdocs to attend the
meeting. Please email Patrick Dorey
in advance if you would like to apply for support and please
book early to take advantage of the cheaper fares.