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Physics : Recent Questions and Answers (Page 703)

Find answers to your questions about Physics or help others by answering their Physics questions.

Reducing the Hamiltonian size by using a symmetry to speed computations

Say I have some Hamiltonian $mathcal{H}$ that describes a 1-D spin chain (i.e. Heisenberg model) which has a number of compatible symmetries ${mathcal{O}^i}$ (i.e. total spin...etc). For all...

Asked on 12/27/2020 by FriendlyLagrangian

1 answer

Common potential in Capacitors

If two isolated charged capacitors (of different capacitance) are connected in parallel to each other they acquire a common potential. But suppose if i connect positive plate of one capacitor...

Asked on 12/27/2020 by user232991

2 answer

The investigation of particles in constant chromomagnetic field

The problem of the particle in the external magnetic field is one of the most famous and oldest problems in quantum mechanics. Hamiltonian of the particle in the constant magnetic...

Asked on 12/27/2020

1 answer

One-point function in CFT on an infinite strip through scaling analysis

In Philippe Di Francesco's book on Conformal Field Theory in section 11.2.3 on the Infinite Strip, the one point function of a primary operator (with scaling dimension...

Asked on 12/27/2020 by M111

1 answer

Local inertial frames, and locally flat geometry, taylor expanding metric coefficients

In general relativity, if there is a line element of the form $$ds^2 = [f(u, v)]du^2 + [h(u, v)]dvdu + [w(u, v)]dv^2$$ which I believe corresponds to metric coefficients...

Asked on 12/27/2020 by mitsterful

2 answer

X and Y profile of a round object using a 45degree mirror (why is the Y profile smaller)

I'm trying to measure the X and Y profiles of a round object using a single camera. The camera has a direct view of the object in the X profile...

Asked on 12/27/2020 by bluscape

1 answer

QFT: differential cross section from center of mass to lab frame

I have the following process: two ingoing particles, a photon hitting a nucleus, and two outgoing particles, the nucleus and a pion. I have computed $|M|^2$ and the differential cross...

Asked on 12/27/2020 by user22710

1 answer

What's the influence of the number of supersymmetry?

In papers sometimes we could see like ${cal N}=1$ supersymmetry and ${cal N}=2$ supersymmetry. I'm wondering, for different ${cal N}$, how does ${cal N}$ influence the...

Asked on 12/27/2020

0 answer

Torque direction meaning

I apologize if this question is dumb, but I've looked all over for a straightforward answer, and either I can't find one or either the terms are too complex for...

Asked on 12/27/2020 by xxe

6 answer

Specific heat of a vortex lattice in a d-wave superconductor

I am looking for a reference that discusses the thermodynamic properties of Abrikosov lattices in d-wave superconductors, especially the discussion to calculate the specific heat of vortex lattice in the...

Asked on 12/27/2020

0 answer

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