# Research Seminar Series

### Applied Mathematics Seminars

## Maths HEP Lunchtime Seminars: Domain walls, anomalies and (de)confinement in quantum magnets and Yang-Mills theory

27 October 2017 13:00 in CM221

Quantum magnets in 2 spatial dimensions are effectively described by a 2+1D abelian-higgs theory with monopoles. Such materials support a phase of highly entangled ground state called the Valence Bond Solid phase, where spin-1/2 excitations are confined into spin-1 object. Moreover the ground state breaks lattice symmetries spontaneously and is therefore degenerate. The effective description has a striking resemblance to a version of QCD with adjoint matter, including the N=1 and N=2 Super Yang-Mills theory as well as theta=pi pure Yang-Mills theory. The common feature of all these theories is that they are confining and support domain walls which, in turn, are deconfining. The underlying reason for deconfinement are the underlying 't Hooft anomalies between various global symmetries of the theories.

Contact daniele.dorigoni@durham.ac.uk or jyotirmoy.bhattacharya@durham.ac.uk for more information

### Arithmetic Study Group

## Maths HEP Lunchtime Seminars: Domain walls, anomalies and (de)confinement in quantum magnets and Yang-Mills theory

27 October 2017 13:00 in CM221

Quantum magnets in 2 spatial dimensions are effectively described by a 2+1D abelian-higgs theory with monopoles. Such materials support a phase of highly entangled ground state called the Valence Bond Solid phase, where spin-1/2 excitations are confined into spin-1 object. Moreover the ground state breaks lattice symmetries spontaneously and is therefore degenerate. The effective description has a striking resemblance to a version of QCD with adjoint matter, including the N=1 and N=2 Super Yang-Mills theory as well as theta=pi pure Yang-Mills theory. The common feature of all these theories is that they are confining and support domain walls which, in turn, are deconfining. The underlying reason for deconfinement are the underlying 't Hooft anomalies between various global symmetries of the theories.

Contact daniele.dorigoni@durham.ac.uk or jyotirmoy.bhattacharya@durham.ac.uk for more information

### Centre for Particle Theory Colloquia

## Maths HEP Lunchtime Seminars: Domain walls, anomalies and (de)confinement in quantum magnets and Yang-Mills theory

27 October 2017 13:00 in CM221

Quantum magnets in 2 spatial dimensions are effectively described by a 2+1D abelian-higgs theory with monopoles. Such materials support a phase of highly entangled ground state called the Valence Bond Solid phase, where spin-1/2 excitations are confined into spin-1 object. Moreover the ground state breaks lattice symmetries spontaneously and is therefore degenerate. The effective description has a striking resemblance to a version of QCD with adjoint matter, including the N=1 and N=2 Super Yang-Mills theory as well as theta=pi pure Yang-Mills theory. The common feature of all these theories is that they are confining and support domain walls which, in turn, are deconfining. The underlying reason for deconfinement are the underlying 't Hooft anomalies between various global symmetries of the theories.

Contact daniele.dorigoni@durham.ac.uk or jyotirmoy.bhattacharya@durham.ac.uk for more information

### Computing Seminars/Talks

27 October 2017 13:00 in CM221

Contact daniele.dorigoni@durham.ac.uk or jyotirmoy.bhattacharya@durham.ac.uk for more information

### CPT Student Seminar

27 October 2017 13:00 in CM221

Contact daniele.dorigoni@durham.ac.uk or jyotirmoy.bhattacharya@durham.ac.uk for more information

### Departmental Research Colloquium

27 October 2017 13:00 in CM221

Contact daniele.dorigoni@durham.ac.uk or jyotirmoy.bhattacharya@durham.ac.uk for more information

### Distinguished Lectures and Public Lectures

27 October 2017 13:00 in CM221

Contact daniele.dorigoni@durham.ac.uk or jyotirmoy.bhattacharya@durham.ac.uk for more information

### Geometry and Topology Seminar

27 October 2017 13:00 in CM221

Contact daniele.dorigoni@durham.ac.uk or jyotirmoy.bhattacharya@durham.ac.uk for more information

### Informal HEP Journal club

27 October 2017 13:00 in CM221

Contact daniele.dorigoni@durham.ac.uk or jyotirmoy.bhattacharya@durham.ac.uk for more information

### Maths HEP Lunchtime Seminars

27 October 2017 13:00 in CM221

Contact daniele.dorigoni@durham.ac.uk or jyotirmoy.bhattacharya@durham.ac.uk for more information

### Pure Maths Colloquium

27 October 2017 13:00 in CM221

Contact daniele.dorigoni@durham.ac.uk or jyotirmoy.bhattacharya@durham.ac.uk for more information

### Statistics Seminars

27 October 2017 13:00 in CM221

Contact daniele.dorigoni@durham.ac.uk or jyotirmoy.bhattacharya@durham.ac.uk for more information

### Stats4Grads

27 October 2017 13:00 in CM221

Contact daniele.dorigoni@durham.ac.uk or jyotirmoy.bhattacharya@durham.ac.uk for more information

Information about seminars for the current academic year. For information on previous years' seminars please see the seminar archives pages.