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Frederic Thomas

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Top Questions
9 votes

Is every spontaneous symmetry breaking connected with a second order phase transition?

phase-transition symmetry-breaking bose-einstein-condensate asked Dec 6, 2017 at 19:32
physics.stackexchange.com

8 votes

Can photons have negative energy?

quantum-field-theory feynman-diagram asked Jun 10, 2014 at 17:36
physics.stackexchange.com

8 votes

Protection of the electron mass by chiral symmetry

quantum-field-theory renormalization asked Jun 25, 2014 at 13:14
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8 votes

Is a Schwarzschild solution possible in 3 space-time dimensions?

general-relativity black-holes metric-tensor curvature spacetime-dimensions asked Oct 12, 2020 at 14:23
physics.stackexchange.com

7 votes

Shouldn't Charge Conjugation be known as "positive/negative frequency symmetry"?

quantum-field-theory symmetry charge-conjugation asked Oct 3, 2013 at 14:47
physics.stackexchange.com

6 votes

Do Korean airlines still overfly Russia?

air-travel russia asked Jul 25, 2022 at 8:41
travel.stackexchange.com

6 votes

Basic question on the Aharonov-Bohm effect

quantum-mechanics electromagnetism topology asked Jul 6, 2014 at 21:32
physics.stackexchange.com

6 votes

Understanding field strength renormalization

quantum-field-theory renormalization asked Jul 18, 2018 at 17:17
physics.stackexchange.com

6 votes

Different types of covariant derivatives in Poincare' invariant differential geometry

general-relativity differential-geometry gauge-theory covariance poincare-symmetry asked Dec 18, 2018 at 18:03
physics.stackexchange.com

5 votes

Comoving system of expanding or collapsing dust-like particles

general-relativity reference-frames metric-tensor gravitational-collapse asked Sep 1, 2019 at 15:49
physics.stackexchange.com

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Top Answers
17
Can we understand from basic QED, why is the photon electrically neutral?
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14
Can an electron and a proton be artificially or naturally merged to form a neutron?
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12
Why did the Bohr Model Successfully calculate some of the energy levels in hydrogen?
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12
Does energy change with change in position of electron (in quantum model)?
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12
How do we know that all quantum fields are Fourier transforms of creation and annihilation operators?
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12
Why do we need to make a tensor for the electromagnetic field?
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10
Why are phonons bosons if they cannot occupy the same eigenstate?
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8
Number of gluons inside a proton/neutron
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8
Currently self-studying QFT and The Standard Model by Schwartz and I'm stuck at equation 1.5 in Part 1 regarding black-body radiation
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8
The reasoning of the definition of $S$-matrix
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7
Why can we add counterterms?
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7
Probability current density confusion
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7
How can electric wave and magnetic waves have any angle between them?
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6
What is Weak isospin in Laymans terms?
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6
Maxwell equations of motion from $S = \frac{-1}{2} \int F \wedge \ast F$
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6
Proton Antiproton collision
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6
Are both of these the Dirac Hamiltonian?
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6
Do virtual particles have negative mass?
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6
How can we define Magnetic Potential Energy if it is non-conservative?
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5
Why is spacetime curved by mass but not charge?
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5
Einstein and Riemann curvature tensor
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5
Why is $\vert \phi \vert ^2$ infinite in QFT?
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5
Peskin & Schroeder Chap. 7.1 ultraviolet divergence
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5
Why don't they use electrons at CERN?
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5
Does the Dirac equation put charge and spin on the same footing?
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5
About the spin of elementary particles
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5
How do particle accelerators like the LHC bend beams of particles?
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5
How to calculate the period of non-circular orbits?
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5
Reformulate Einstein equations to make them linear
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