User Quillo

107

votes

10

answers

14k

views

How can I stand on the ground? EM or/and Pauli?

Dec 26 '17 at 12:05 Qmechanic♦ 146k

83

votes

6

answers

13k

views

What is more fundamental, fields or particles?

quantum-mechanics quantum-field-theory particle-physics soft-question

May 3 '20 at 11:24 Community♦ 1

59

votes

5

answers

15k

views

Is the CMB rest frame special? Where does it come from?

cosmology reference-frames cosmic-microwave-background

Feb 20 '18 at 18:20 Community♦ 1

50

votes

4

answers

3k

views

Is there an underlying physical reason why the Coriolis force is similar to the magnetic component of the Lorentz force?

electromagnetism newtonian-mechanics special-relativity forces magnetic-fields

Jun 30 '18 at 22:23 Giorgio Comitini 3,263

46

votes

9

answers

6k

views

Is a spontaneous decrease in entropy impossible or just extremely unlikely?

statistical-mechanics entropy

Oct 8 at 12:51 ErgodicRoller 425

43

votes

7

answers

5k

views

Prove that negative absolute temperatures are actually hotter than positive absolute temperatures

thermodynamics statistical-mechanics temperature equilibrium spin-chains

Nov 2 '18 at 8:22 jkds 139

38

votes

3

answers

3k

views

Why does glass, in spite of being amorphous, often break along very smooth surfaces?

solid-state-physics everyday-life vibrations glass

Jul 10 at 13:41 S. McGrew 23.3k

35

votes

3

answers

2k

views

Why is high temperature superconductivity so hard to solve?

temperature superconductivity lattice-model

May 16 '18 at 20:48 Qmechanic♦ 146k

34

votes

3

answers

5k

views

What role does “spontaneously symmetry breaking” played in the “Higgs Mechanism”?

quantum-field-theory symmetry symmetry-breaking higgs gauge-symmetry

Jan 22 at 7:53 Nihar Karve 4,704

32

votes

5

answers

2k

views

Is there a physical system whose phase space is the torus?

classical-mechanics hamiltonian-formalism topology phase-space

Aug 1 '17 at 12:53 stafusa 10.5k

31

votes

3

answers

12k

views

Is it really proper to say Ward identity is a consequence of gauge invariance?

quantum-field-theory gauge-theory quantum-electrodynamics correlation-functions ward-identity

Feb 6 at 22:20 Qmechanic♦ 146k

28

votes

1

answer

5k

views

What does a Galilean transformation of Maxwell's equations look like?

electromagnetism special-relativity maxwell-equations galilean-relativity aether

Sep 19 '18 at 8:21 Emilio Pisanty 116k

26

votes

3

answers

9k

views

Gravity as a gauge theory

general-relativity gravity quantum-gravity gauge-theory yang-mills

Feb 16 '16 at 18:25 Diego Mazón 6,042

24

votes

4

answers

6k

views

Galilean invariance of Lagrangian for non-relativistic free point particle?

newtonian-mechanics lagrangian-formalism symmetry galilean-relativity

Dec 23 at 12:35 Qmechanic♦ 146k

24

votes

3

answers

11k

views

What is the conceptual difference between Gibbs and Boltzmann entropies?

statistical-mechanics entropy

Feb 8 '17 at 16:16 saldenisov 473

23

votes

2

answers

1k

views

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

electromagnetism electromagnetic-radiation conservation-laws noethers-theorem

Mar 15 at 15:44 Emilio Pisanty 116k

23

votes

3

answers

3k

views

Mixing of quarks, neutrinos… and leptons?

particle-physics standard-model leptons

Oct 24 at 15:18 Cosmas Zachos 35.7k

23

votes

2

answers

2k

views

In what sense is the path integral an independent formulation of Quantum Mechanics/Field Theory?

quantum-mechanics quantum-field-theory operators hilbert-space path-integral

Sep 18 '13 at 9:40 Trimok 16.2k

22

votes

1

answer

8k

views

Lagrangian of Schrodinger field

quantum-field-theory lagrangian-formalism schroedinger-equation hamiltonian-formalism constrained-dynamics

Dec 9 at 21:18 Qmechanic♦ 146k

21

votes

2

answers

4k

views

Can any rank tensor be decomposed into symmetric and anti-symmetric parts?

tensor-calculus representation-theory

Nov 10 at 13:59 fra_pero 569

21

votes

2

answers

2k

views

Is there a strong force analog to magnetic fields?

electromagnetism special-relativity quantum-electrodynamics quantum-chromodynamics

Dec 24 '14 at 12:31 Community♦ 1

19

votes

1

answer

11k

views

Constants of motion vs. integrals of motion vs. first integrals

classical-mechanics conservation-laws noethers-theorem integrals-of-motion integrable-systems

Mar 1 '18 at 20:57 Qmechanic♦ 146k

18

votes

3

answers

5k

views

What is it about the “conduction band” of a material that is distinct from the valence band?

semiconductor-physics electronic-band-theory conductors insulators

Jul 5 '16 at 8:09 JDługosz 4,830

18

votes

3

answers

4k

views

Do strong and weak interactions have classical force fields as their limits?

quantum-field-theory forces standard-model quantum-chromodynamics classical-mechanics

Nov 21 '16 at 16:56 Community♦ 1

17

votes

7

answers

2k

views

How does quantization arise in quantum mechanics?

quantum-mechanics discrete

Apr 15 '20 at 8:40 Peter Enders 1

16

votes

4

answers

2k

views

Differences between principles of QM and QFT

quantum-mechanics quantum-field-theory

Jul 22 '17 at 13:28 Community♦ 1

15

votes

6

answers

5k

views

Is there a quasistatic process that is not reversible?

thermodynamics statistical-mechanics friction reversibility

Sep 8 at 15:44 Benoit 175

15

votes

0

answers

382

views

Phil Anderson's Criticism of Existence of Stable Dissipative Structures

thermodynamics statistical-mechanics biophysics emergent-properties

Sep 9 at 0:08 Prof. Cemal Basaran 1

15

votes

1

answer

536

views

Relation between radio waves and photons generated by a classical current

quantum-mechanics electromagnetic-radiation photons quantum-electrodynamics

Oct 18 '19 at 21:35 Chiral Anomaly 39.6k

14

votes

6

answers

4k

views

What is the temperature of dark matter?

cosmology temperature dark-matter

May 22 at 22:29 Chappo Hasn't Forgotten Monica 313

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How can I stand on the ground? EM or/and Pauli?

What is more fundamental, fields or particles?

Is the CMB rest frame special? Where does it come from?

Is there an underlying physical reason why the Coriolis force is similar to the magnetic component of the Lorentz force?

Is a spontaneous decrease in entropy impossible or just extremely unlikely?

Prove that negative absolute temperatures are actually hotter than positive absolute temperatures

Why does glass, in spite of being amorphous, often break along very smooth surfaces?

Why is high temperature superconductivity so hard to solve?

What role does “spontaneously symmetry breaking” played in the “Higgs Mechanism”?

Is there a physical system whose phase space is the torus?

Is it really proper to say Ward identity is a consequence of gauge invariance?

What does a Galilean transformation of Maxwell's equations look like?

Gravity as a gauge theory

Galilean invariance of Lagrangian for non-relativistic free point particle?

What is the conceptual difference between Gibbs and Boltzmann entropies?

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

Mixing of quarks, neutrinos… and leptons?

In what sense is the path integral an independent formulation of Quantum Mechanics/Field Theory?

Lagrangian of Schrodinger field

Can any rank tensor be decomposed into symmetric and anti-symmetric parts?

Is there a strong force analog to magnetic fields?

Constants of motion vs. integrals of motion vs. first integrals

What is it about the “conduction band” of a material that is distinct from the valence band?

Do strong and weak interactions have classical force fields as their limits?

How does quantization arise in quantum mechanics?

Differences between principles of QM and QFT

Is there a quasistatic process that is not reversible?

Phil Anderson's Criticism of Existence of Stable Dissipative Structures

Relation between radio waves and photons generated by a classical current

What is the temperature of dark matter?