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0 votes
1 answer
148 views

Newton's second law - local laws and non-local laws

What are local laws? I was reading this line in a book... Newtons second law is a local law. This means that it applies to a particle at a particular instant without taking into consideration any ...
Aditi Bansal's user avatar
2 votes
3 answers
1k views

What is the difference between nonlocality and entanglement?

I'm a bit confused about the difference and relation between (quantum) nonlocality and entanglement. To give some context about my confusion, I was reading this paper: Brunner, Nicolas, et al. "...
jay's user avatar
  • 37
4 votes
2 answers
165 views

What is locality?

In QFT and statistical mechanics, one is usually interested in studying integrals of the form: $$Z(\phi) =\int d\mu_{C}(\phi')e^{-V(\phi+\phi')}$$ where $\mu_{C}$ is Gaussian measure with mean zero ...
JustWannaKnow's user avatar
0 votes
0 answers
29 views

What is recessional nonlocality?

In laymen’s terms, what is recessional nonlocality? I understand recessional means to recede or retract away, and (correct me if I’m wrong) I understand locality has something to do with quantum ...
nope's user avatar
  • 1
0 votes
0 answers
1k views

Local and Non-Local Potentials

Can anybody explain the difference and concepts between local and non-local potentials in light of quantum mechanics?
user267839's user avatar
  • 1,395
8 votes
1 answer
3k views

What is meant by a local Lagrangian density?

What is meant by a local Lagrangian density? How will a non-local Lagrangian look like? What is the problem that we do not consider such Lagrangian densities?
SRS's user avatar
  • 26.8k
5 votes
1 answer
1k views

Definition of Local Function

Now a days I am studying Srednicki's QFT book. In its third chapter it is written that Any local function of φ(x) is a Lorentz scalar, [...] . Now my question is: What is a local function?
rainman's user avatar
  • 3,023