User Danu

93 votes

Accepted

Layman's explanation and understanding of Einstein's field equations

general-relativity

answered Apr 29, 2015 at 16:16

53 votes

Book covering differential geometry and topology for physics

answered Apr 3, 2016 at 20:53

49 votes

Accepted

Why should any physicist know, to some degree, experimental physics?

experimental-physics soft-question

answered Aug 26, 2014 at 10:47

37 votes

Accepted

How can we recover the Newtonian gravitational potential from the metric of general relativity?

general-relativity gravity newtonian-gravity metric-tensor

answered Oct 11, 2015 at 15:05

34 votes

Accepted

Why is quantum mechanics called 0+1 dimensional QFT?

quantum-mechanics quantum-field-theory terminology spacetime-dimensions

answered Oct 9, 2017 at 11:36

33 votes

Is it fair to judge this speedskating race by only 3 thousands of a second?

acoustics speed

answered Feb 15, 2014 at 16:50

31 votes

Is it a problem with radiometric dating that carbon 14 is found in materials dated to millions of years old?

radioactivity

answered Dec 23, 2014 at 6:55

28 votes

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Does gravity affect magnetism, vice-versa, or do they "ignore" each other?

electromagnetism gravity

answered Sep 22, 2014 at 17:44

25 votes

Accepted

Is the Uncertainty Principle valid for information about the past?

quantum-mechanics operators heisenberg-uncertainty-principle measurements wave-particle-duality

answered Jun 12, 2014 at 14:29

20 votes

Accepted

How does one correctly interpret the behavior of the heat capacity of a charged black hole?

general-relativity black-holes hawking-radiation qft-in-curved-spacetime black-hole-thermodynamics

answered Sep 10, 2015 at 11:58

17 votes

Accepted

Why are EM plane waves transverse?

homework-and-exercises electromagnetism electromagnetic-radiation plane-wave

answered Oct 5, 2014 at 1:40

16 votes

Accepted

Are electron fields and photon fields part of the same field in QED?

electromagnetism photons electrons quantum-electrodynamics

answered Feb 23, 2015 at 21:04

16 votes

Accepted

D'Alembertian for a scalar field

general-relativity differential-geometry metric-tensor differentiation covariance

answered Mar 3, 2014 at 10:33

15 votes

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How can we speak use the notion of "particle" in LHC, given that we live in a curved spacetime?

quantum-field-theory particle-physics qft-in-curved-spacetime

answered Oct 22, 2015 at 11:16

14 votes

Why do we select the metric tensor for raising and lowering indices?

general-relativity differential-geometry metric-tensor tensor-calculus

answered May 17, 2017 at 12:40

14 votes

Accepted

What symmetry is associated with conservation of Lipkin's zilch?

electromagnetism electromagnetic-radiation conservation-laws noethers-theorem

answered Dec 14, 2015 at 22:14

14 votes

Is there any relation between Planck constant and Gravitational constant?

quantum-mechanics newtonian-gravity quantum-gravity physical-constants

answered Jun 2, 2014 at 10:35

14 votes

Accepted

Free Field theory to Interacting Field theory

quantum-field-theory lagrangian-formalism klein-gordon-equation

answered May 7, 2014 at 14:09

13 votes

Minkowski Metric Signature

special-relativity metric-tensor coordinate-systems complex-numbers wick-rotation

answered Apr 8, 2014 at 17:53

13 votes

Any "connection" between uncountably infinitely many differentiable manifolds of dimension 4 and the spacetime having dimension four?

general-relativity spacetime differential-geometry field-theory spacetime-dimensions

answered Oct 23, 2016 at 8:43

12 votes

Introduction to AdS/CFT

string-theory resource-recommendations ads-cft

answered Oct 22, 2015 at 18:55

12 votes

Accepted

Where does de Broglie wavelength $\lambda=h/p$ for massive particles come from?

quantum-mechanics momentum wave-particle-duality wavelength

answered Oct 10, 2014 at 10:09

12 votes

Minimal vs. Non-minimal coupling in General Relativity

general-relativity gravity lagrangian-formalism gauge-theory qft-in-curved-spacetime

answered Mar 17, 2014 at 16:45

11 votes

Accepted

Quantum entanglement as practical method of superluminal communication

quantum-mechanics quantum-entanglement faster-than-light

answered Sep 21, 2013 at 21:37

11 votes

Difference between B and H in magnetic fields?

electromagnetism magnetic-fields

answered Nov 21, 2013 at 9:16

11 votes

Accepted

Is interstellar flight possible in near future in a way that would keep our civilization alive?

rocket-science space-travel

answered Aug 11, 2014 at 11:51

10 votes

Accepted

Does the Bohr van Leeuwen Theorem also apply to ferromagnetism?

quantum-mechanics electromagnetism statistical-mechanics solid-state-physics

answered Jun 30, 2014 at 19:49

10 votes

Derive vector gradient in spherical coordinates from first principles

differential-geometry vectors coordinate-systems differentiation calculus

answered Sep 25, 2013 at 10:34

10 votes

Naive visualization of space-time curvature

general-relativity spacetime curvature

answered Mar 7, 2014 at 8:37

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211 Answers

Layman's explanation and understanding of Einstein's field equations

Book covering differential geometry and topology for physics

Why should any physicist know, to some degree, experimental physics?

How can we recover the Newtonian gravitational potential from the metric of general relativity?

Why is quantum mechanics called 0+1 dimensional QFT?

Is it fair to judge this speedskating race by only 3 thousands of a second?

Is it a problem with radiometric dating that carbon 14 is found in materials dated to millions of years old?

Does gravity affect magnetism, vice-versa, or do they "ignore" each other?

Is the Uncertainty Principle valid for information about the past?

How does one correctly interpret the behavior of the heat capacity of a charged black hole?

Why are EM plane waves transverse?

Are electron fields and photon fields part of the same field in QED?

D'Alembertian for a scalar field

How can we speak use the notion of "particle" in LHC, given that we live in a curved spacetime?

Why do we select the metric tensor for raising and lowering indices?

What symmetry is associated with conservation of Lipkin's zilch?

Is there any relation between Planck constant and Gravitational constant?

Free Field theory to Interacting Field theory

Minkowski Metric Signature

Suggested reading for quantum field theory in curved spacetime

Any "connection" between uncountably infinitely many differentiable manifolds of dimension 4 and the spacetime having dimension four?

Introduction to AdS/CFT

Where does de Broglie wavelength $\lambda=h/p$ for massive particles come from?

Minimal vs. Non-minimal coupling in General Relativity

Quantum entanglement as practical method of superluminal communication

Difference between B and H in magnetic fields?

Is interstellar flight possible in near future in a way that would keep our civilization alive?

Does the Bohr van Leeuwen Theorem also apply to ferromagnetism?

Derive vector gradient in spherical coordinates from first principles

Naive visualization of space-time curvature