Lattice Gauge Theory for the QuarkGluon Plama对于夸克胶子等离子体的格点规范理论.pptVIP

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Lattice Gauge Theory for the QuarkGluon Plama对于夸克胶子等离子体的格点规范理论.ppt

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Lattice Gauge Theory for the QuarkGluon Plama对于夸克胶子等离子体的格点规范理论

Sep 1, 2007 Saturday Show: S. Gupta Lattice Gauge Theory for the Quark-Gluon Plasma Sourendu Gupta TIFR Can particle physics predict the mass of this system? Protein folding and other entropic terms: about 1 eV Binding energy of electrons: 1 keV Electron rest mass: 1 MeV Proton mass: 1 GeV 3-6 digit accuracy! The first 3 digits Particles in the Standard Model (1990s) The Eightfold Way (variables) The Eightfold Way (variables) The Eightfold Way (variables) The Eightfold Way (variables) The basics of extreme matter Normal matter made of baryons Baryons contain 3 quarks and interact by exchanging mesons Mesons contain 2 quarks When you squeeze this matter by applying pressure (or heating it up) you get matter with large numbers of quarks This is the quark gluon plasma Quark matter factories Create an universe through a big bang and let it cool Create a supernova and let its core collapse into a really compressed star Bang some (relatively) large chunks of matter together very hard Think hard … you may get a patent The RHIC at Brookhaven Chronology of heavy-ion collisions Initial 1 fm or so: nuclei collide and many particles are created Next 7 fm or so: secondary collisions and flow? Later: particles free stream to detector On quark matter Normal matter needs QED or its effective theories There are many phases of normal matter Normal matter may be neutral or a plasma Normal matter may be a solid, liquid or a gas Quark matter needs QCD or its effective theories There are many phases of quark matter Quark matter may be neutral or a plasma Quark matter is fluid: either gas or liquid How to pro(b/v)e a liquid Show that there is some matter …count the number of particles coming out of the collision and compute density Show that this generates pressure …elliptic flow: also used in the BEC Does the pressure drive flow? …detailed analysis of velocities Is there transport: energy, baryon etc? How to predict its properties Need to use quantum field theory Equation for fields