|ket> and notation
... When you change the description of the world from the inutitive and everyday classical mechanics to the more abstract quantum mechanical description, you will usually have gone from a description of a world as composed of particles to one composed of wavefunctions. Instead of describing a physical s ...
... When you change the description of the world from the inutitive and everyday classical mechanics to the more abstract quantum mechanical description, you will usually have gone from a description of a world as composed of particles to one composed of wavefunctions. Instead of describing a physical s ...
Some Notes on Field Theory
... number of degrees of freedom. Examples are systems of many interacting particles or critical phenomena like second order phase transitions. Here we will concentrate on the scattering of particles, but the general framework can be applied to any domain in physics. For an introduction, we simplify Nat ...
... number of degrees of freedom. Examples are systems of many interacting particles or critical phenomena like second order phase transitions. Here we will concentrate on the scattering of particles, but the general framework can be applied to any domain in physics. For an introduction, we simplify Nat ...
Introduction Vacuum effects due to Dirac Sea When do the
... • Dispersion relations used in QFT first by Gell- Mann, Thirring and Goldberger , Phys. Rev. 95, 1612 (1954). • Is there a minimum length scale involved which the wavelength of light is not allowed to fall below? How many atoms constitutes the minimum number before you can apply the idea of a refrac ...
... • Dispersion relations used in QFT first by Gell- Mann, Thirring and Goldberger , Phys. Rev. 95, 1612 (1954). • Is there a minimum length scale involved which the wavelength of light is not allowed to fall below? How many atoms constitutes the minimum number before you can apply the idea of a refrac ...
Dark Energy
... There is no Ether and The speed of light is constant, independent from the motion of the source or the observer. ...
... There is no Ether and The speed of light is constant, independent from the motion of the source or the observer. ...
5.11 Harmonic Oscillator
... regions. For example, a pendulum oscillating with an amplitude A cannot have a displacement greater than A. Could there be a nonzero probability of finding the system in "forbidden" regions. I wonder what that means for our swinging bowling ball… ...
... regions. For example, a pendulum oscillating with an amplitude A cannot have a displacement greater than A. Could there be a nonzero probability of finding the system in "forbidden" regions. I wonder what that means for our swinging bowling ball… ...
5.62 Physical Chemistry II
... convenient! Statistical Mechanics will tell us how to vastly reduce the amount of information needed to “completely” describe a bulk system. ...
... convenient! Statistical Mechanics will tell us how to vastly reduce the amount of information needed to “completely” describe a bulk system. ...
A quantum calculation of the higher order terms in the Bloch
... been stimulated by an article of Chang and Stehle (1971) who derive the shift from a quantum electrodynamics calculation. The expression obtained by Chang and Stehle is in complete disagreement with the results of several other theoretical approaches : Shirley’s theory (1965), using Floquet states, ...
... been stimulated by an article of Chang and Stehle (1971) who derive the shift from a quantum electrodynamics calculation. The expression obtained by Chang and Stehle is in complete disagreement with the results of several other theoretical approaches : Shirley’s theory (1965), using Floquet states, ...
Background : It has long been observed that birds and fish and even
... system undergoes a phase transition for a disordered state (where everybody is doing their own thing) to an ordered state (where there is coherent motion among the whole group) as a function of noise, which plays the role of temperature in these inherently non-equilibrium systems. This exercise is i ...
... system undergoes a phase transition for a disordered state (where everybody is doing their own thing) to an ordered state (where there is coherent motion among the whole group) as a function of noise, which plays the role of temperature in these inherently non-equilibrium systems. This exercise is i ...
Microscopic theory of the Casimir effect at thermal equilibrium: large
... How to deal with the low temperature-short distance regime within the microscopic model ? Is the standard Casimir force formula modified by quantum charge fluctuations in the ground state of the metals ? Corrections to the leading asymptotic term ? Make explicit connections with Lifshitz theories Re ...
... How to deal with the low temperature-short distance regime within the microscopic model ? Is the standard Casimir force formula modified by quantum charge fluctuations in the ground state of the metals ? Corrections to the leading asymptotic term ? Make explicit connections with Lifshitz theories Re ...
