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Consider the following protocol:Alice and Bob share the statebegin{equation} |Phi^+rangle=frac{1}{sqrt{2}}(|0rangle|0rangle pm |1rangle|1rangle) end{equation}Alice has to teleport to Bob the state (which can be unknown even to her)...
Asked on 11/28/2021
1 answerI am trying to solve the following advection-diffusion equation for transient flow conditions for radial flow. The governing equation is as follows.$$frac{partial T}{partial t} = frac{partial^2 T}{partial x^2}...
Asked on 11/28/2021
0 answerFrom what I know:The magnetic field strength, $vec{H}$, is the field generated by a free current flowing on an electric conductor.The magnetic flux density, $vec{B}$, is a response...
Asked on 11/28/2021
2 answerDuring the review of some EM exercises I stumbled over a very interesting problem I just can't find the solution for. Suppose we are looking at a waveguide with side...
Asked on 11/28/2021
1 answerI am trying to understand physically why the air molecules at the nodes of a standing sound wave move around the least. Is it because they act like springs? So...
Asked on 11/28/2021
1 answerIn Goldstein, chapter three, third derivation, given as, Kepler's equation can be written as${rho} = esin({omega}t + {rho})$,Now I have to prove that the first approximation to...
Asked on 11/25/2021
2 answerIn the first volume of Polchinski page 39 we can read a compact formula to perform normal-order for bosonic fields$$:cal F:~=~underbrace{expleft{frac{α'}{4}∫mathrm{d}^2zmathrm{d}^2wlog|z-w|^2frac{δ}{δφ(z,bar z)}frac{δ}{δφ(w,bar zw)} right}}_{:=mathcal{O}}cal F, tag{1}$$...
Asked on 11/25/2021
2 answerCould someone describe the difference, qualitatively, between QFT in curved spacetime, semiclassical gravity, and quantum gravity? I know that each is an approximation to the next and the end goal...
Asked on 11/25/2021
1 answerI'm making a car driving video game which uses real engine torque curves, gear ratios and other physical attributes as parameters to simulate the motion of a specific car. The...
Asked on 11/25/2021
1 answerI have been reading Senechal's lecture notes on bosonization, and I appreciate the care that he takes in dealing with the zero modes of the massless boson....
Asked on 11/25/2021
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