Wild Feather

Member for 6 years, 7 months
Last seen more than a week ago

Summary

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homework-and-exercises

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Questions

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Score Activity Newest Views

4

Is the parity operator an observable?

Jun 12, 2020

4

Why do free-falling particles converge onto the Hubble flow?

Jan 8

2

Why is cosmological time unique?

Jan 12

2

Concept of distance in cosmology

Jan 13

2

Poisson equation in universe with gravity and expansion

Jul 24

Answers

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2

When will the 2 cars Have equal speeds?

Jan 30

0

Continuity equation for the conservation of energy from the conservation of the energy-momentum tensor

Mar 16

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homework-and-exercises

2

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2

posts

time

2

Score

2

posts

speed

2

Score

1

post

kinematics

2

Score

1

post

cosmology

0

Score

18

posts

Reputation

+10

Sign convention for the Lagrangian of a free massive point particle in general relativity

+10

Momentum in terms of comoving velocity in cosmology

+10

Poisson equation in universe with gravity and expansion

+10

Poisson equation in Cosmology at first order in perturbation theory

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8

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