The twenty-fourth meeting of the North British Mathematical
Physics Seminar was 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 came. The original page announcing the meeting is
here.

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.

12:30-13:45

Lunch

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.)

15:45-16:30

Tea

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

Patrick Dorey
Last modified: 9 July 2009