All Questions
Tagged with locality conservation-laws
7
questions
2
votes
1
answer
123
views
Is conservation of energy a local law in Quantum field theory? [closed]
From Wikipedia,
"The local energy conservation in quantum field theory is ensured by the quantum Noether's theorem for the energy-momentum tensor operator. Thus energy is conserved by the normal ...
- 51
3
votes
1
answer
754
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Proof that conservation of momentum is Lorentz invariant
In classical mechanics, if
$$\frac{\mathrm d}{\mathrm d t}\sum_i m_i\vec{v_i}=0$$is true for one frame of reference, then it is easy to prove that this is true for all frames (since different frames ...
- 1,801
2
votes
2
answers
193
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Global conservation + Lorentz invariance = local conservation?
On the page 83 of "Quantum Field Theory Lectures of Sidney Coleman", Coleman showed an interesting example:
It seems that global conservation law and local conservation law can be related. ...
- 192
4
votes
2
answers
226
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The conditions under which a stress tensor $T^{\mu\nu}$ exists
I used to believe that the existence of the stress tensor in a QFT has to do with translation invariance: "If a theory is translation invariant, then one can construct a conserved $T^{\mu\nu}$ by ...
- 699
4
votes
1
answer
563
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What is a "quasi-local" charge?
Could someone please tell me what is a quasi-local charge? For instance, why are Brown-York charges called quasi-local?
- 700
3
votes
1
answer
365
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What is the mathematical meaning of locality?
I have read on the Principle of locality Wikipedia page that:
"The special theory of relativity limits the speed at which all such influences can travel to the speed of light, c. Therefore, the ...
- 753
1
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1
answer
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Newton's third law at the quantum level? [closed]
let's look at force at the atomic level to understand the newtons third law of motion. I'll use Helium atoms as an example.
Now imagine we start with one atom HE2 stationary, and throw another atom ...
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