Physics

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Question saved by 25 users. This badge can be awarded multiple times.
Awarded 725 times.
Mathematically rigorous QFT text
Awarded Aug 16 at 10:16
What is the physical meaning of the Lindblad operator?
Awarded Aug 13 at 15:52
Is there any theorem that suggests that QM+SR has to be an operator theory?
Awarded Aug 2 at 21:41
Birds sitting on electric wires: potential difference between the legs
Awarded Jul 26 at 16:11
Why mass terms are forbidden?
Awarded Jul 21 at 12:05
Why does a body always rotate about its center of mass? [duplicate]
Awarded Jun 11 at 17:25
The interpretation of mass in quantum field theories
Awarded Jun 10 at 15:46
Why does the density of electric field lines make sense, if there is a field line through every point?
Awarded Jun 5 at 22:02
What is a Lorentz boost and how to calculate it?
Awarded May 12 at 12:06
Why Lorentz group for fields and Poincaré group for particles?
Awarded May 9 at 9:25
Total spin of two spin-$1/2$ particles
Awarded May 5 at 4:55
Why isn't the path integral rigorous?
Awarded May 3 at 10:47
Do electrons have shape?
Awarded May 1 at 14:17
How exactly does gravity work?
Awarded Apr 26 at 17:55
What is the relationship between string theory and quantum field theory?
Awarded Apr 26 at 12:00
Is there a kind of Noether's theorem for the Hamiltonian formalism?
Awarded Apr 13 at 15:11
Discreteness of set of energy eigenvalues
Awarded Apr 1 at 14:04
Cyclist's electrical tingling under power lines
Awarded Mar 12 at 1:32
Is there an equation for the strong nuclear force?
Awarded Mar 7 at 11:27
When can we take the Brillouin zone to be a sphere?
Awarded Feb 23 at 10:50
Dirac once said that renormalization is just a stop gap procedure, and there had to occur a fundamental change in our ideas. Did something change?
Awarded Feb 19 at 14:50
What is the answer to Feynman's Disc Paradox?
Awarded Feb 18 at 17:18
Why must a physical theory be mathematically self-consistent?
Awarded Feb 7 at 16:23
What happened to David John Candlin?
Awarded Feb 7 at 16:17
Functional derivative in Lagrangian field theory
Awarded Feb 7 at 16:10
How exactly is the formalism of thermodynamics based on contact geometry?
Awarded Jan 22 at 14:22
Chern insulator vs topological insulator
Awarded Jan 21 at 3:38
What is Quantization?
Awarded Jan 17 at 4:31
How do I calculate the perturbations to the metric determinant?
Awarded Jan 9 at 12:42
Why doesn't water boil in the oven?
Awarded Jan 7 at 0:12
I'm missing the point of renormalization in QFT
Awarded Dec 19, 2022 at 23:36
Different representations of the Lorentz algebra
Awarded Dec 4, 2022 at 21:10
The Spin Connection
Awarded Nov 18, 2022 at 15:40
Why can't we ascribe a (possibly velocity dependent) potential to a dissipative force?
Awarded Nov 16, 2022 at 14:40
Time as a Hermitian operator in quantum mechanics
Awarded Nov 14, 2022 at 7:25
Difficulties with bra-ket notation
Awarded Nov 7, 2022 at 19:32
What is the decay width and why is it given in energy units?
Awarded Nov 3, 2022 at 7:50
Why there is a flat band for Kagome lattice?
Awarded Oct 27, 2022 at 5:17
The phrase "Trace Anomaly" seems to be used in two different ways. What's the relation between the two?
Awarded Oct 24, 2022 at 17:41
What is meant by the term "completeness relation"
Awarded Oct 22, 2022 at 21:10
What are the primary obstacles to solve the many-body problem in quantum mechanics?
Awarded Oct 18, 2022 at 14:28
Why is quantum gravity non-renormalizable?
Awarded Oct 16, 2022 at 20:36
How does QFT predict the probability density to find a particle at x?
Awarded Oct 7, 2022 at 5:36
Why doesn't a typical beam splitter cause a photon to decohere?
Awarded Sep 29, 2022 at 11:17
Does electricity flow on the surface of a wire or in the interior?
Awarded Sep 22, 2022 at 12:07
What is the meaning of a state in QFT?
Awarded Sep 22, 2022 at 6:51
Problems while Wick rotating the path integral
Awarded Sep 20, 2022 at 1:17
Getting particles from fields: normalization issue or localization issue?
Awarded Sep 16, 2022 at 16:40
How exactly do you avoid fooling yourself?
Awarded Sep 16, 2022 at 16:40
Can a photon get emitted without a receiver?
Awarded Sep 6, 2022 at 17:10
Can the Lorentz force expression be derived from Maxwell's equations?
Awarded Sep 1, 2022 at 6:33
Mathematically, what is color charge?
Awarded Aug 26, 2022 at 20:10
Second law of Newton for variable mass systems
Awarded Aug 22, 2022 at 17:31
Systematic way to draw all inequivalent Feynman diagrams
Awarded Aug 21, 2022 at 15:48
How are classical optics phenomena explained in QED (Snell's law)?
Awarded Aug 19, 2022 at 6:30
Geodesic Equation from variation: Is the squared lagrangian equivalent?
Awarded Aug 7, 2022 at 15:52
Differences between symmetric, Hermitian, self-adjoint, and essentially self-adjoint operators
Awarded Aug 1, 2022 at 19:27
How literally should you take "The Higgs boson gives other particles mass"?
Awarded Aug 1, 2022 at 12:35
Noether Theorem and Energy conservation in classical mechanics
Awarded Jul 27, 2022 at 8:01
How can a photon have no mass and still travel at the speed of light?
Awarded Jul 26, 2022 at 13:01
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