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Physics : Recent Questions and Answers (Page 104)

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

Calculation of effective action in Einstein frame

I want to do the calculation for the effective action in Einstein frame (see Tong's lecture notes Chapter 7.3), this action in string frame is given by...

Asked on 08/18/2021 by thehardyreader

0 answer

Difference between minimal coupling $(p-qA)$ and $B cdot L$,In Hamiltonian

It seems like when coupling an electron to a magnetic field we always use $B cdot S$ to couple its spin magnetic moment to the magnetic field. However sometimes...

Asked on 08/18/2021

1 answer

How Joule-Thomson coefficient is measured experimentally?

I am reading about Joule-Thomson effect but I can't understand how the respective coefficient $μ$ can be measured experimentally. The Joule-Thomson coefficient is defined as: $$μ=left(frac{partial T}{partial p}right)_H$$...

Asked on 08/18/2021

1 answer

Hirerarchy Problem and Higgs mass Correction in One Loop

I want to calculate Higgs mass correction in SM to show that:$$delta m_{H} = frac{Lambda^{2}}{32 pi^{2}} [6 lambda + frac{1}{4}(9g^{2}+ 3 g^{' 2}) - y_{t}^{2}]$$ but...

Asked on 08/17/2021 by Mohammad Khan

0 answer

What force is acting on the container?

Foreword:I have been trying to solve this problem for several days: [Does diffusion cause the bottle to move to the left?]But the answers presented there are...

Asked on 08/17/2021 by ACB

2 answer

Is harmonic oscillator a free particle in disguise?

Let me start with an example. If one considers a free particle motion on two-dimensional plane and projects it onto the radial coordinate, one gets the following Hamiltonian$$H...

Asked on 08/17/2021 by user108687

0 answer

Why don't we add atmospheric pressure the same we do pressure from other liquids?

If we have two fluids $1$ on top of $2$, I know that the absolute pressure of a fluid $2$ is $p_2 = p_1 + rho...

Asked on 08/17/2021 by user305084

1 answer

Understanding the conformal invariance of the scalar massless wave equation

It can be shown mathematically that the scalar massless wave equation is conformally invariant. However, doing so is rather tedious and muted in terms of physical understanding. As such, is...

Asked on 08/17/2021

1 answer

Magnetic field due to an infinite slab, where its two halves have current in opposite direction

Say we have a uniform current density J = J zˆ exists in a slab between the infinite planes x = −b and x = +b, but the left half...

Asked on 08/17/2021 by PhysicsIdiot

0 answer

What is the difference between a radio antenna and a capacitor?

As I understand it, a mobile phone and a base station communicate by exchanging photons. The antenna is like one half of a capacitor. Pulsating voltage is applied to the...

Asked on 08/17/2021 by MKaama

3 answer

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