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So I want to solve the equation of inflation involving a scalar field numerically using python libraries such as odient or scipy. The equation is:$$defphi{varphi}phi''(t)+3Hphi'(t)+V'(phi(t))=0$$with given...
Asked on 06/03/2021 by user14491798
0 answerI'm writing my bachelor thesis in CFT (without ever having taken any courses in any field theory) and I'm trying to figure out why in two-dimensional scale-invariant theory the conservation...
Asked on 06/02/2021 by Yalom
1 answerThe two postulates of special relativity areThe laws of physics take the same form in all inertial frames of reference.The speed of light in free space has the same value...
Asked on 06/02/2021
3 answerIn his book "Modern Particle Physics", Mark Thomson explains two problems with masses of elementary particles in the SM: (i) If we take the QED Lagrangian $mathcal L =...
Asked on 06/02/2021
1 answerIf a parabolic mirror is used to concentrate sunlight approximately to a focus point why can't an another smaller parabolic mirror be used to reparalelise the beams that are...
Asked on 06/02/2021
1 answerI would argue that the SUVAT equations, which correctly describe all constant-acceleration motion (including hypothetical situations governed by unusual laws of dynamics), cannot possibly be derived from a specific set...
Asked on 06/02/2021 by Brian Drake
3 answerWhat are some free and open-source interactive simulations, illustrations, animations, demonstrations, videos, calculators and other resources for experimental physics and mathematics like the Wolfram demonstration project...
Asked on 06/02/2021 by huzaifa abedeen
2 answerI have searched everywhere I know to look but I cannot find out how Hamilton's equations deal with non-conservative forces. In my understanding, Lagrangian mechanics deals with this as follows:...
Asked on 06/02/2021
2 answerWhy can't two clocks synchronized with signals SLOWER than the speed of light, measure the speed of light in one direction? I know that it is not possible to measure...
Asked on 06/02/2021
1 answerWhen a beam of light rays fall on a metal surface at an angle, shouldn't the electrons get ejected( due to transfer of energy and momentum ) just like in...
Asked on 06/02/2021
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