Slides
... choice of the form of the E-M tensor, because to add a surface term will not change the conservation law satisfied by the E-M tensor. • The symmetric one is prefered because it is gauge invariant and the Einstain gravitation equation needs symmetric one. • In fact the E-M tensor density of em-field ...
... choice of the form of the E-M tensor, because to add a surface term will not change the conservation law satisfied by the E-M tensor. • The symmetric one is prefered because it is gauge invariant and the Einstain gravitation equation needs symmetric one. • In fact the E-M tensor density of em-field ...
Gapless layered three-dimensional fractional quantum Hall states
... and the Coulomb interaction are both of paramount importance in such a putative phase. This poses a theoretical challenge since the obvious FQH states—such as those constructed from Chern-Simons mean-field theory—have a fixed number of electrons in each layer and are therefore unnatural except for v ...
... and the Coulomb interaction are both of paramount importance in such a putative phase. This poses a theoretical challenge since the obvious FQH states—such as those constructed from Chern-Simons mean-field theory—have a fixed number of electrons in each layer and are therefore unnatural except for v ...
briancox
... • Simulations (Louvain) indicate precision is better than necessary (theoretical limit is LHC beam energy uncertainty , s0 = 0.77 GeV ~ 50 microns) (also WW, M> 200 GeV, s100 fb -> very high sensitivity to anomalous quartic couplings) ...
... • Simulations (Louvain) indicate precision is better than necessary (theoretical limit is LHC beam energy uncertainty , s0 = 0.77 GeV ~ 50 microns) (also WW, M> 200 GeV, s100 fb -> very high sensitivity to anomalous quartic couplings) ...
The Matter Glitch
... a. Why don’t protons decay as neutrons do? b. Why is the universe made of matter and not anti-matter? c. Why do neutrinos have a tiny but variable mass? a. Why are there three particle “generations” then no more? b. Why do electrons "half spin"? c. Why does mass vary enormously but charge doesn’t? d ...
... a. Why don’t protons decay as neutrons do? b. Why is the universe made of matter and not anti-matter? c. Why do neutrinos have a tiny but variable mass? a. Why are there three particle “generations” then no more? b. Why do electrons "half spin"? c. Why does mass vary enormously but charge doesn’t? d ...
Mean Multiplicity of Quark and Gluon Jets as a Function of Opening
... A comparison of the properties of quark and gluon jets has been made by Monte Carlo simulation of the reaction Z → bbg. The jet energy is held fixed for every 5 GeV between 15–30 GeV energies and the mean multiplicity of b-quark and gluon jets are obtained as function of the angle between them. It i ...
... A comparison of the properties of quark and gluon jets has been made by Monte Carlo simulation of the reaction Z → bbg. The jet energy is held fixed for every 5 GeV between 15–30 GeV energies and the mean multiplicity of b-quark and gluon jets are obtained as function of the angle between them. It i ...
CERN Teacher Programmes: Welcome to CERN!
... exchange speculations: physicists looked at various combinations of charge exchange and spin exchange between nucleons with varying degrees of success, but none could produce complete and satisfactory quantitative explanations of observed nuclear phenomena. The way out of the difficulties was provid ...
... exchange speculations: physicists looked at various combinations of charge exchange and spin exchange between nucleons with varying degrees of success, but none could produce complete and satisfactory quantitative explanations of observed nuclear phenomena. The way out of the difficulties was provid ...
20070822140014201
... context of QCD. At the chiral phase transition we provide compelling evidence from lattice and phenomenological instanton liquid models that the QCD Dirac operator undergoes a metal - insulator transition similar to the one observed in a disordered conductor. This suggests that Anderson localization ...
... context of QCD. At the chiral phase transition we provide compelling evidence from lattice and phenomenological instanton liquid models that the QCD Dirac operator undergoes a metal - insulator transition similar to the one observed in a disordered conductor. This suggests that Anderson localization ...
Axion thermalization in the early universe
... attached to the fermion line with the usual derivative coupling. The other reason is that color and flavor factors make the interaction rate larger. Our result in Eq. 共41兲 is in fact conservative. This is due to the fact that the effective theory below the scale F a has couplings of the axion to the ...
... attached to the fermion line with the usual derivative coupling. The other reason is that color and flavor factors make the interaction rate larger. Our result in Eq. 共41兲 is in fact conservative. This is due to the fact that the effective theory below the scale F a has couplings of the axion to the ...