User lurscher - Physics Stack Exchange

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visits	member for	2 years, 4 months
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stats	profile views	644

	4,275 reputation	bio	website		visits	member for	2 years, 4 months
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Density of classical states in quantum theory

4h ago Community♦ 1

1

4

votes

2

answers

53

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How are X-rays focused? Specifically in XRD. Well do they even focus X-rays in XRD?

optics condensed-matter x-ray x-ray-crystallography

7h ago Emilio Pisanty 7,021

3

votes

1

answer

178

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Ward Identity makes QED logarithmic divergent?

quantum-electrodynamics

8h ago Community♦ 1

1

5

votes

4

answers

691

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What is the minimum amount of fissile mass required to acheive criticality?

nuclear-engineering

2d ago whit 21

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16

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3

answers

714

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How do we know Dark Matter isn't simply Neutrinos?

particle-physics cosmology neutrino dark-matter

2d ago Rafael M Munoz 1

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3

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1

answer

167

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Wigner's friend and quantum Zeno effect

quantum-mechanics

2d ago Community♦ 1

5

13

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2

answers

1

kviews

What is the possibility of a railgun assisted orbital launch?

space rocket-science

may 16 at 4:26 billington 1

7

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3

answers

789

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From where (in space-time) does Hawking radiation originate?

black-holes hawking-radiation

may 14 at 13:18 Ron Maimon 44.8k

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9

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1

answer

538

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Self energy, 1PI, and tadpoles

quantum-field-theory symmetry-breaking perturbation-theory effective-action

may 13 at 6:06 Community♦ 1

1

10

votes

2

answers

261

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Is there a way to directly observe the spin texture of the surface states of topological insulators?

experimental-physics condensed-matter topological-insulators

may 12 at 9:05 Community♦ 1

4

3

votes

3

answers

1

kviews

Derivation of Maxwell's equations from field tensor lagrangian

electromagnetism lagrangian-formalism variational-principle maxwell-equations action

may 12 at 0:11 Qmechanic♦ 17.2k

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3

answers

1

kviews

A No-Nonsense Introduction to Quantum Field Theory

quantum-field-theory books

may 7 at 19:23 Qmechanic♦ 17.2k

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2

answers

261

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Is there stringy Morse theory?

string-theory

may 7 at 10:03 lav 1

3

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5

answers

480

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Does the amount of gravitational potential energy in the universe increase as it expands?

general-relativity cosmology energy-conservation universe space-expansion

may 6 at 9:31 Philip Gibbs 2,485

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1

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237

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Loschmidt's paradox - really a paradox?

thermodynamics entropy arrow-of-time

may 5 at 9:21 Qmechanic♦ 17.2k

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6

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1

answer

327

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Is the time reversed laser really a laser?

laser

may 4 at 12:04 Community♦ 1

10

8

votes

8

answers

2

kviews

What are cosmological “firewalls”?

string-theory cosmology black-holes holographic-principle black-hole-firewall

may 3 at 4:18 Brandon Enright 2,449

3

4

votes

0

answers

57

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Deviation from power law distribution of earthquakes

statistical-mechanics complex-systems non-equilibrium non-linear-dynamics

apr 27 at 0:27 Qmechanic♦ 17.2k

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6

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3

answers

175

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supressing certain decay paths and enhancing others with interference

quantum-field-theory particle-physics antimatter interference coherence

apr 25 at 20:01 Community♦ 1

4

7

votes

2

answers

459

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Does a Weak Energy Condition Violation Typically Lead to Causality Violation?

general-relativity

apr 25 at 13:01 Community♦ 1

2

9

votes

1

answer

205

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How is the Dirac adjoint generalized?

mathematical-physics dirac-equation spinors classical-field-theory

apr 22 at 4:01 Community♦ 1

4

votes

0

answers

189

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Extended Born relativity, Nambu 3-form and ternary (n-ary) symmetry

classical-mechanics symmetry differential-geometry group-theory

apr 20 at 17:18 riemannium 331

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1

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57

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Alpha Centauri Bb: Comparing astrometric precision vs doppler precision

astronomy exoplanet

apr 19 at 10:47 sirius3100 11

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14

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10

answers

6

kviews

Does the Pauli exclusion principle instantaneously affect distant electrons?

quantum-mechanics special-relativity speed-of-light pauli-exclusion-principle

apr 17 at 15:57 anc 1

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7

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9

answers

1

kviews

QM without complex numbers

quantum-mechanics history complex-numbers

apr 16 at 9:07 Christoph 2,018

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2

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439

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Does perturbation theory break down for quantum gravity?

general-relativity quantum-gravity renormalization perturbation-theory

apr 15 at 19:52 Qmechanic♦ 17.2k

3

votes

2

answers

349

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Lorentz invariance of the 3 + 1 decomposition of spacetime

general-relativity symmetry differential-geometry hamiltonian-formalism

apr 15 at 16:42 Alex Nelson 812

3

votes

1

answer

1

kviews

What is quantum discord?

quantum-mechanics quantum-information quantum-computation

apr 10 at 3:08 Ryan 74

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1

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109

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The Unruh effect for temporarily accelerated particles

quantum-gravity unruh-effect

apr 3 at 21:03 Qmechanic♦ 17.2k

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499

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Regularisation of infinite-dimensional determinants

quantum-mechanics quantum-field-theory operators regularization hamiltonian

mar 26 at 1:50 Community♦ 1

lurscher

339 Favorites