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Physics : Recent Questions and Answers (Page 822)

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

Casimir operator and the BTZ gauge invariant quantities

I am a bit confused with the information that is provided by the Casimir operator.First, with my understanding, a Casimir operator is defined as,$$Omega_rho := sum_{i-1}^{dim L}...

Asked on 09/27/2020 by Patrick.B

0 answer

How to get the Riemann curvature tensor from the commutator operating on a basis vector

In the following the basis vectors are assumed to be varying functions of position. This means that when a vector appears under the differentiation operator, both components and basis vectors...

Asked on 09/27/2020 by Steven Thomas Hatton

1 answer

Can only an object with mass feel forces?

Find acceleration in the following system : This was a solved example in the book (*) which had steps as...

Asked on 09/27/2020

2 answer

The evolution of spacetime curvature and how mass/energy affects it

Background Info I'm just starting to look into tensor analysis and general relativity. I have taken college level courses on Newtonian mechanics, electromagnetism, and special relativity that roughly follow the...

Asked on 09/27/2020

1 answer

What would happen if a miniature black hole (or a PBH) would pass through Earth at relativistic speed?

There are a lot of questions about a small BH and the Earth, none of these answer my question specifically. And there are contradictory answers. Some of them state that...

Asked on 09/27/2020 by Árpád Szendrei

1 answer

Basis Functions for Hartree Fock, and Configuration Interaction

I'm about halfway through the book Szabo and Ostlund, and while I think I understand the rough idea of Hartree-Fock and configuration interaction, there is something I would like to...

Asked on 09/26/2020 by Connor Dolan

2 answer

Field Theory: Electric Field

I am a grade 12 student, and we are learning electric flux. We covered electrostatic forces and, now we are on electric flux. We defined electric flux as the total...

Asked on 09/26/2020 by ASB

3 answer

Can anyone suggest a math review book for someone interested in beginning physics study as a hobby?

Good day. This is my first post and I was not sure whether to post here or on Math StackExchange. Since the end product of my goal results in ultimately...

Asked on 09/26/2020 by Nathan D.

2 answer

Existence of statistical ensemble with fixed energy but varying volume

To me, every statistical ensemble in statistical physics was introduced beginning with the microcanonical ensemble, in which every microstate is equally probable. A canonical ensemble is described by combining two...

Asked on 09/26/2020 by Quantumwhisp

1 answer

What is the difference in heat transfer between liquid-solid and gas-solid?

As far as I know solids exchange heat energy on contact the best of the three states, due to density and etc. while gasses are worst at that. Recently I...

Asked on 09/26/2020 by Cat

2 answer

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