Physics Questions, Problems & Solutions : TransWikia.com ~ Page 841

Why is the wavefunction of a mixed-flavor baryon (e.g. the proton) antisimmetric under exchange of quarks of different flavors?

A similar question has been put before in this forum, but not with full clarity. So I would like to revisit the question and express it differently, hoping for a...

Asked on 08/17/2020 by hobbyist72

0 answer

Can we use pressure analogy to understand inflation?

Classically, the expansion of a gas in a container requires the gas to apply outward pressure to the walls of the container. Is it also true for the Universe during...

Asked on 08/17/2020

1 answer

Newton's Third Law of Motion and Gravity

I have another question about the third law of Newton (if you can check the last one that I posted) : Why is it that the gravity that pushes...

Asked on 08/15/2020 by PhysicsMan

4 answer

Besides dim regularization, what are the advantages of Euclidean QFT?

Initially, I saw Wick rotation as a useful trick to apply dimensional regularization, but then I learned about instantons and how they only exist in Euclidean Yang-Mills.Also, I heard...

Asked on 08/15/2020

1 answer

inertial pressure on in a rotating syringe

First question on stackexchange. Hopefully somebody can help me out. I'm struggling to express the following eloquently. I have a rotating syringe tipped with a needle. rotation speed w,...

Asked on 08/15/2020 by Tom O'Haire

1 answer

Why does voltage drop but current continues to flow after an electric charge is passed through a circuit component?

I've been reading about why voltage drop occurs and that electrical potential energy supplied to an electrical charge is lost after work is done, but my question is that after...

Asked on 08/15/2020 by TMax

1 answer

Relation between 4-divergence and 3-divergence of vector on the hypersurface

How the relation $nabla_{a} u^{a}=D_{a} u^{a}-epsilon v^{i} nabla_{i} v_{j} u^{j}$ where $D_{a}$ is covariant derivate on the hypersurface between 4-divergence and 3-divergence of the vector on the hypersurface...

Asked on 08/15/2020 by RandomXYZ

1 answer

Exact Diagonalization of a tight-binding Hamiltonian with periodically alternating potential

My question is, can we diagonalize a general Hamiltonian ,$$H=-tsum_i^N (c_i^{dagger}c_{i+1}+h.c.)+sum_i mu_i c_i^{dagger}c_i$$ where,$$mu_i=begin{cases}mu_0, &text{if mod}(i,p)=00, &text{otherwise}.end{cases}$$ Obviously, $p$ is the periodicity...

Asked on 08/14/2020 by Roopayan Ghosh

1 answer

Confusion about optic axis

In the book 'OPTICS' by Eugene Hetch it is written that, "the optic axis is actually a direction and not merely a single line".I can't understand why it is...

Asked on 08/14/2020 by user257564

1 answer

Any open-source to animate 2D materials in 3D. (e.g. van der Waals heterostructures, 2D crystal layers etc.)

I want to model different 2D nano-structures, layered materials in 3D (animated version). Is there any open source where I can build these structures? ...

Asked on 08/14/2020 by ravi

0 answer

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