ELFT HÍRADÓ

["Balog Janos" <balog AT rmki.kfki.hu>]

KFKI RMKI Elméleti Főosztály Szemináriuma


Tisztelettel meghívjuk


                         Yuji Satoh
               (University of Tsukuba, Japan)

"Gluon scattering amplitudes from gauge/string duality and integrability"



                címmel tartandó szemináriumára.


Helye: KFKI RMKI III. ép. Tanácsterem
Ideje: 2011. június 20. hétfő du. 14 óra


Kivonat:

By the gauge/string duality, gluon scattering amplitudes of N=4 super
Yang-Mills theory at strong coupling are given by the area of minimal
surfaces
in anti-de Sitter space. These minimal surfaces are described by certain
integral equations. We observe a general connection between these integral
equations and the thermodynamic Bethe ansatz (TBA) equations for
the homogeneous sine-Gordon (HSG) model. By calculating the g-functions
(boundary entropy) and the free energy of the HSG model, we also derive
analytic expansions of the scattering amplitudes around kinematic points
corresponding to the high-temperature limit of the TBA equations. We find
that
appropriately rescaled remainder functions at strong coupling are very close
to those at 2 loops.


Szívesen látunk minden érdeklődőt.
                                            Balog János