All Questions
5
questions
1
vote
0
answers
80
views
Was time statistical?
In QFT the change to the Euclidean picture the $$\exp[iS]$$ looked like the partition function in statistical mechanics, and thereby the approaches in the statistical mechanics might be uaeful to that ...
- 3,256
3
votes
1
answer
293
views
How do we perform 'time' translation in Euclidean QFT?
If we have an operator in a $1+1$ dimension QFT then we get the Hamiltonian, which comes from and generates translations in the $t$ direction and a momentum operator which comes from and generates ...
- 1,933
13
votes
3
answers
2k
views
Why is Euclidean Time Periodic?
I've been reading a bit about finite temperature quantum field theory, and I keep coming across the claim that when one Euclideanizes time
$$it\to\tau,$$
the time dimension becomes periodic, with ...
- 1,055
0
votes
0
answers
68
views
Explain Imaginary Time and Temperature [duplicate]
I was amazed to learn that we can use Imaginary unit iota into physical quantities like time and Temperature but how exactly?
The explanation was not something I would say stellar so I am hoping can ...
- 11
4
votes
0
answers
408
views
Equivalence of $d$ dimensional quantum system to $d+1$ dimension stats system
" There are close analogies between quantum field
theories in d dimensions and classical statistical mechanics in d + 1."
What does this statement imply and from where does this extra dimension ...
- 667