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SUMMARY:New N=1 dualities from contracting orientifolds - Garcia-Etxebarri
 a\, I (CERN - European Organisation for Nuclear Research)
DTSTART:20120629T133500Z
DTEND:20120629T141000Z
UID:TALK38776@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:I will describe recent work on a new class of dualities\, dire
 ctly inherited from IIB S-duality\, in 4d theories with 4 supercharges. \n
 \nI will focus on the microscopic description of the duality\, when realiz
 ed in terms of system of branes at singularities in string theory. The the
 ories in question are obtained by considering\, in addition to the fractio
 nal branes\, orientifold planes wrapping vanishing 4-cycles. \n\nI will di
 scuss the system from the point of view of large volume branes\, focusing 
 in particular on the relevant issues when continuing orientifolds of quive
 r gauge theories to large volume. This discussion provides a first princip
 les derivation of the relevant orientifolded quivers. By studying the stro
 ngly coupled behavior of the resulting orientifold+brane configuration\, I
  will argue for the existance of a dual\, weakly coupled description of th
 e strongly coupled quiver theory at the singularity.\n\n
LOCATION:Seminar Room 1\, Newton Institute
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