Browsing by Subject "QCD"
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Item 3D Quivers and Integrability(2013-06-11) KoroteevItem AGT conjecture and non-perturbative beta-function in supersymmetric QCD(2012-02-08) Marshakov, AndreiItem All order linearised hydrodynamics from fluid-gravity correspondence(2016-05-14) Lublinsky, MichaelRelativistic fluid dynamics emerges as an effective theory describing strongly coupled QFTs at finite temperature. Following a brief intro into relativistic fluid dynamics, I will discuss how constitutive relation/transport coefficients of a fluid can be obtained using the holographic methods. Applying the fluid/gravity correspondence, we have determined the (linearized) stress energy tensor of N=4 super-Yang-Mills theory at strong coupling accounting for all orders in derivatives of the fluid velocity. I will introduce momenta-dependent transport functions, such as generalized shear viscosity, and will derive closed form linear holographic RG|flow-type equations for these functions.Item Anomalous magnetic moment of a bound electron(2016-05-12) CZARNECKI, ANDRZEJThe mass of the electron is best determined with hydrogen-like ions in|a Penning trap. Binding in an ion removes the error due to the thermal|motion of the electron. However, the price is that some properties of|the electron are modified by the binding. These changes can be|computed in QED but there are interesting complications due to the|binding. I will present a new determination of the g-factor of a bound|electron. This calculation is motivated by the 2014 improvement in the|mass of the electron and makes further experimental progress|possible. Bound-state studies have traditionally been a mix of art and|science, and part of our motivation is to make them more algorithmic.Item Applications of the collinear anomaly: qT resummation and jet broadening(2012-02-08) Neubert, MatthiasItem Approaching conformality in lattice models(2016-05-14) Meurice, YannickWe discuss new renormalization group methods designed to study near conformal situations in two dimensional spin models and four dimensional multi flavor gauge theories.Item Aspects of the sign problem in QCD(2016-05-13) Cohen, ThomasThe sign problem in QCD is important since it inhibits our ability to use numerical lattice gauge theory methods to describe many significant problems including QCD matter at nonzero baryon chemical potential. In this talk, the sign problem is explored for QCD with a theta term--a more straightforward problem than the case of the chemical potential. Various subtle effects arise in the infinite volume limit which at first blush seem highly counter-intuitive. This talk will elucidate these effects.Item Axion EFT and Dense Axion Stars(2016-05-12) Braaten, EricAxions can be described by a relativistic field theory with a real scalar field whose self-interaction potential is a periodic function. If axionic dark matter is a Bose-Einstein condensate, it can be described more simply by a nonrelativistic effective field theory with a complex scalar field. A stable axion star is a gravitationally bound Bose-Einstein condensate of axions. In previously known axion star solutions, the attractive forces of gravity and axion pair interactions are balanced by the kinetic axion pressure. A new class of axion stars has been discovered in which the attractive forces are balanced by the mean-field pressure of the axion Bose-Einstein condensate.Item Brane Dynamics and 3D Seiberg Duality on the Domain Walls of 4D N=1 SYM(2012-02-07) Armoni, AdiItem Chiral Symmetry and Cold Nuclear Matter in Large Nc QCD(2012-02-07) Cohen, ThomasItem Chiral symmetry breaking, confinement and the mass generation of hadrons(2013-06-11) GlozmanItem Chiral symmetry breaking, confinement and the mass generation of hadrons(2013-06-11) GlozmanItem Chiral symmetry of excited hadrons from phenomenology, theory and lattice(2012-02-07) Glozman, LeonidItem Collective Fluctuations ofWilson Dirac Spectra and First Order Phase Transitions(2013-06-11) VerbaarschotItem Confinement, RG flows in the complex coupling plane and Fisher's zeros(2012-02-08) Meurice, YannickItem Continuous chiral symmetry breaking in a calculable regime(2016-05-14) Cherman, AlekseyI will discuss work with M. Unsal on a semiclassically-calculable regime of 4D QCD, obtained by an adiabatic circle compactification, in which continuous chiral symmetry breaking can be studied systematically.Item Continuous Insights in Wilson Fermions(2012-02-07) Verbaarschot, JacobusItem Correlations in hadronic wave function(2016-05-14) Kovner, AlexI discuss within the Color Glass approach, how Bose-Einstein correlations between gluons in hadronic wave function can exhibit themselves as observable correlations between emitted particles in the final state.Item Coulomb branch, Higgs branch, and nilpotent orbits(2016-05-12) Hanany, AmihayTheories with 8 supercharges have moduli spaces of vacua which generically divide into two branches - the so called Coulomb branch and the Higgs branch. These branches are HyperKahler in the cases of Higgs branch in dimensions 3 up to 6, and Coulomb branch in 3. They become cones when one sets the FI terms and masses to zero. There is a natural SU(2)_R which acts on 3 complex structures. We will devote our talk to general aspects of HyperKahler cones and discuss quiver gauge theories where these spaces arise as moduli spaces in one or more of these branches. Special attention is given to moduli spaces in which the generators of the chiral carry spin 1 under SU(2)_R, and consequently transform in the adjoint representation of the global symmetry group. They shall be termed mesonic moduli spaces. It turns out that there is a full classification of these spaces which goes under the name of “nilpotent orbits”. We will discuss general aspects of these spaces and the new exciting directions that these results can take us.Item Critical behavior in QED3 and the effects of Topological mass(2012-02-08) Hoshino, Yuichi