All Questions
Tagged with unruh-effect operators
4
questions
1
vote
1
answer
732
views
Unruh effect derivation
I was going through the derivation of the Unruh effect in chapter 5 of these lecture notes ("Lecture Series on
Relativistic Quantum Information" by Prof Ivette Fuentes). On p.26 the author ...
- 157
8
votes
3
answers
934
views
Interpretation of the nonuniqueness of vacuum of QFT in flat spacetime for a given inertial observer; No Lorentz transformation; No accelerated motion
Consider an inertial observer in flat spacetime with a choice of coordinates $(t,{\vec x})$. This observer can expand a quantum field $\hat{\phi}$ in more than one complete set of orthonormal modes. ...
- 11.8k
1
vote
2
answers
124
views
What is the interpretation of non-uniqueness of field expansion in flat spacetime?
Scalar field expansion in terms of plane wave modes is given by
$$\phi(x)=\int\frac{d^3{\vec p}}{\sqrt{(2\pi)^{3}2\omega_{\vec p}}}\left(a_{\vec p}e^{-ip\cdot x}+a_p^\dagger e^{+ip\cdot x}\right)$$ ...
- 11.8k
3
votes
1
answer
220
views
Why does annihilation and creation operator mix in curved spacetime?
When doing QFT in curved spacetime we do Bogoliubov transformation to find one set of annihilation and creation operators in terms of others. In the paper Particle creation by black holes
Hawking ...
- 3,043