why do physicists think that there are extra dimensions
... furthermore, we could have signals from direct searches in the next generation of WIMP detectors ...
... furthermore, we could have signals from direct searches in the next generation of WIMP detectors ...
Asymptotic Freedom and Quantum
... taken into account. It was a scientific sensation when it was shown that QED by itself could handle the divergences. The perturbation calculations were also shown to give extremely exact results. One helpful factor is the smallness of the expansion parameter, α, the so-called fine structure constant ...
... taken into account. It was a scientific sensation when it was shown that QED by itself could handle the divergences. The perturbation calculations were also shown to give extremely exact results. One helpful factor is the smallness of the expansion parameter, α, the so-called fine structure constant ...
URL - StealthSkater
... There has been much discussion regarding the Alcubierre “warp drive” metric [1] and its energy requirements [1, 2, 3, 4, 5, 6, 7]. Alcubierre showed that a negative energy density was required to make the warp drive space-time possible -- a requirement that violates the Weak, Strong, and Dominant En ...
... There has been much discussion regarding the Alcubierre “warp drive” metric [1] and its energy requirements [1, 2, 3, 4, 5, 6, 7]. Alcubierre showed that a negative energy density was required to make the warp drive space-time possible -- a requirement that violates the Weak, Strong, and Dominant En ...
Spontaneous breaking of continuous symmetries
... (because of derivatives) and so they vanish. Note: the theory expanded around the minimum of the potential has interactions that were not present in the original theory. However it turns out that divergent parts of the counterterms for the theory with (where the symmetry is unbroken) will also serve ...
... (because of derivatives) and so they vanish. Note: the theory expanded around the minimum of the potential has interactions that were not present in the original theory. However it turns out that divergent parts of the counterterms for the theory with (where the symmetry is unbroken) will also serve ...
Electrodynamics of Moving Particles
... It is easy to avoid infinities assuming finite dimensions of the particle. But then an infinite amount of information (Poincaré stresses) is necessary to describe the interior of the particle. Many efforts have been made to replace this infinite number of internal degrees of freedom by a finite num ...
... It is easy to avoid infinities assuming finite dimensions of the particle. But then an infinite amount of information (Poincaré stresses) is necessary to describe the interior of the particle. Many efforts have been made to replace this infinite number of internal degrees of freedom by a finite num ...
The Elegant Universe: Part 2
... what we need is a theory that can cope with the very tiny and the very massive, one that embraces both quantum mechanics and general relativity, and never breaks down, ever. For physicists, finding a theory that unites general relativity and quantum mechanics is the Holy Grail, because that framewor ...
... what we need is a theory that can cope with the very tiny and the very massive, one that embraces both quantum mechanics and general relativity, and never breaks down, ever. For physicists, finding a theory that unites general relativity and quantum mechanics is the Holy Grail, because that framewor ...
6. Quantum Electrodynamics
... ~ This the local, physical, gauge invariant objects E is fine for the free classical theory: Maxwell’s equations ~ and B. ~ But it is were, after all, first written in terms of E not possible to describe certain quantum phenomena, such as the Aharonov-Bohm effect, without using the gauge potential A ...
... ~ This the local, physical, gauge invariant objects E is fine for the free classical theory: Maxwell’s equations ~ and B. ~ But it is were, after all, first written in terms of E not possible to describe certain quantum phenomena, such as the Aharonov-Bohm effect, without using the gauge potential A ...
