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Matrix Product States and Tensor Network States
... global constraint (here, parity) on entanglement degrees of freedom: Only states in even parity sector can appear at boundary! → topological correction to entanglement entropy ...
... global constraint (here, parity) on entanglement degrees of freedom: Only states in even parity sector can appear at boundary! → topological correction to entanglement entropy ...
7. Low Energy Effective Actions
... But we’ve seen this before: it’s the vertex operator associated to the graviton state of the string! For a plane wave, corresponding to a graviton with polarization given by the symmetric, traceless tensor ζµν and momentum pµ , the fluctuation is given by hµν (X) = ζµν eip·X With this choice, the ex ...
... But we’ve seen this before: it’s the vertex operator associated to the graviton state of the string! For a plane wave, corresponding to a graviton with polarization given by the symmetric, traceless tensor ζµν and momentum pµ , the fluctuation is given by hµν (X) = ζµν eip·X With this choice, the ex ...
quantum field theory in curved spacetime
... A subtraction, or regularization, procedure conventionally makes use of the vacuum state. Particle physicists know what the vacuum is: It is (modulo symmetry-breaking degeneracies) the trivial representation of the Poincare group. General relativists are not so lucky. In the absence of geometrical s ...
... A subtraction, or regularization, procedure conventionally makes use of the vacuum state. Particle physicists know what the vacuum is: It is (modulo symmetry-breaking degeneracies) the trivial representation of the Poincare group. General relativists are not so lucky. In the absence of geometrical s ...
Nonequilibrium Quantum Magnetism in a Dipolar Lattice Gas
... dynamics induced by intersite spin-spin interactions of this Heisenberg-like Hamiltonian: a chromium gas loaded in a 3D lattice provides an interesting platform for the analysis of quantum magnetism. In our experiment, we first create a chromium BoseEinstein condensate in a crossed-beam optical dipo ...
... dynamics induced by intersite spin-spin interactions of this Heisenberg-like Hamiltonian: a chromium gas loaded in a 3D lattice provides an interesting platform for the analysis of quantum magnetism. In our experiment, we first create a chromium BoseEinstein condensate in a crossed-beam optical dipo ...
Lecture 5: Physics Beyond the Standard Model and Supersymmetry
... • The W and Z masses depend very sensitively on the parameters that we use to characterize short distance physics → The model is not robust – As with any model, ultrasensitivity to input parameters is a sign that essential features are not properly understood Why New Physics at the LHC? • Need somet ...
... • The W and Z masses depend very sensitively on the parameters that we use to characterize short distance physics → The model is not robust – As with any model, ultrasensitivity to input parameters is a sign that essential features are not properly understood Why New Physics at the LHC? • Need somet ...
Infrared and ultraviolet cutoffs of quantum field theory
... the case, and that the λ-induced effects do not have such a suppression factor and may have observable consequences. Coming back to relation (3), note that a low value of λ implies a limit of validity of QFT at high energies much lower than the Planck mass MP . Precision tests of the electroweak stan ...
... the case, and that the λ-induced effects do not have such a suppression factor and may have observable consequences. Coming back to relation (3), note that a low value of λ implies a limit of validity of QFT at high energies much lower than the Planck mass MP . Precision tests of the electroweak stan ...
Quantum computation of scattering in scalar quantum field theories
... example, in a strongly coupled quantum field theory, the collision of two highly relativistic particles (with momentum much larger than mass, |p| ≫ m) can produce a shower of nout ∼ |p|/m outgoing particles. In cases where the coupling constant is strong, such as at low energies in quantum chromodyn ...
... example, in a strongly coupled quantum field theory, the collision of two highly relativistic particles (with momentum much larger than mass, |p| ≫ m) can produce a shower of nout ∼ |p|/m outgoing particles. In cases where the coupling constant is strong, such as at low energies in quantum chromodyn ...
An introduction to lattice gauge theory and spin systems
... g(A') to describe the same physics at a given physical momentum sca. le. As A- ~, the coupling g(A) vanishes and the theory is free at short distances. The fact that g(A) vanishes as A grows allows one to make precise predictions for deep-inelastic scattering of electrons or neutrinos off strongly i ...
... g(A') to describe the same physics at a given physical momentum sca. le. As A- ~, the coupling g(A) vanishes and the theory is free at short distances. The fact that g(A) vanishes as A grows allows one to make precise predictions for deep-inelastic scattering of electrons or neutrinos off strongly i ...
Invitation to Elementary Particles
... field disturbances which are sufficiently small in their space extent we can picture them, with a proper caution, as point particles1 . In what follows we are not going to present the course of the QFT, neither use the QFT formalism. It is difficult subject which Ph.D. students of particle theoretical ph ...
... field disturbances which are sufficiently small in their space extent we can picture them, with a proper caution, as point particles1 . In what follows we are not going to present the course of the QFT, neither use the QFT formalism. It is difficult subject which Ph.D. students of particle theoretical ph ...