Skip to main content
Physics
delon's user avatar
delon's user avatar
delon's user avatar
delon
  • Member for 4 years, 5 months
  • Last seen more than a month ago
Profile Activity

7 Questions

Score Activity Newest Views
5 votes
1 answer
875 views

Deriving the Hamiltonian of the Klein-Gordon field in terms of ladder operators (Peskin and Schroeder Eq. 2.31)

4 votes
1 answer
151 views

Question about deriving the amount of pressure due to an element of momentum space in cosmology (Baumann Cosmology Book Eq. 3.10)

3 votes
1 answer
501 views

Understanding the Meszaros Effect in terms of Hubble Drag

3 votes
0 answers
87 views

Why are departures from flat spacetime geometry small on scales smaller than the Hubble radius?

1 vote
2 answers
287 views

Trouble understanding why $ {\bf p} a_{\bf p}a_{\bf -p}$ and ${\bf p} a^\dagger_{\bf p}a^\dagger_{-\bf p}$ are odd functions of $\bf p$

0 votes
1 answer
616 views

Understanding why $\frac{\partial (F_{\mu \nu} F^{\mu \nu})}{\partial (\partial_\lambda A_\beta)}=4 F^{\lambda \beta}$ in Maxwell's Equations [duplicate]

0 votes
1 answer
154 views

Transfer function from initial Curvature Perturbations to CMB Temperature Anisotropies has no direction dependence?