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Top Questions
8
votes
Can photons have negative energy?
quantum-field-theory
feynman-diagram
asked Jun 10, 2014 at 17:36
physics.stackexchange.com
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
7
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
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
6
votes
Protection of the electron mass by chiral symmetry
quantum-field-theory
renormalization
asked Jun 25, 2014 at 13:14
physics.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
5
votes
Feynman-Stueckelberg interpretation
antimatter
feynman-diagram
dirac-equation
asked Dec 15, 2014 at 14:10
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
Top Answers
13
Can an electron and a proton be artificially or naturally merged to form a neutron?
physics.stackexchange.com
12
Why did the Bohr Model Successfully calculate some of the energy levels in hydrogen?
physics.stackexchange.com
12
Does energy change with change in position of electron (in quantum model)?
physics.stackexchange.com
10
Why are phonons bosons if they cannot occupy the same eigenstate?
physics.stackexchange.com
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
physics.stackexchange.com
7
Probability current density confusion
physics.stackexchange.com
6
Why can we add counterterms?
physics.stackexchange.com
6
Proton Antiproton collision
physics.stackexchange.com
6
Number of gluons inside a proton/neutron
physics.stackexchange.com
6
Are both of these the Dirac Hamiltonian?
physics.stackexchange.com
5
Einstein and Riemann curvature tensor
physics.stackexchange.com
5
Why is $\vert \phi \vert ^2$ infinite in QFT?
physics.stackexchange.com
5
Why don't they use electrons at CERN?
physics.stackexchange.com
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