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I'm a PhD student at Queen Mary, University of London. I'm interested in modern approaches to scattering amplitudes, in particular twistor methods.


9h
reviewed Approve A neutrino has rest-mass and travels at (near) $c$, why isn't its mass/ energy (nearly) infinite?
1d
awarded  Popular Question
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answered Is heat a property of Something?
Dec
5
reviewed Approve Does the absence of a sound particle indicate that there are no photons?
Dec
5
comment Force-free motion of a Symmetric Top
Well if you've learned about the moment of inertia, then you should know you can express the angular momentum as $I\omega$ where $\omega$ is the angular speed. It's then quite apparent that $L$ is constant. Your confusion may have come because you were trying to treat the top as a single particle, rather than a rigid body! Let me know if you want some more details and I'll write up an answer.
Dec
2
comment Force-free motion of a Symmetric Top
Do you know about the moment of inertia?
Dec
2
comment Will Quantum Computation fail if spacetime is discrete?
Put another way - I think it's impractical that we'd ever be able to build a quantum computer small enough that quantum gravity effects would get in the way. Even if we started using smaller and smaller qubits, we're still unbelievably many orders of magnitude away from quantum spacetime!
Dec
2
answered Will Quantum Computation fail if spacetime is discrete?
Dec
2
awarded  Custodian
Dec
2
reviewed Approve How does a electron revolve in Rutherford's model?
Nov
30
awarded  Popular Question
Nov
12
awarded  Nice Answer
Oct
24
comment Integration & bremsstrahlung calculation
I still can't quite make sense of it. Do you know of any other papers which employ a similar method? It's not really my area (I'm more theoretical) so I think I'd need to read around a bit more before understanding it fully!
Oct
23
revised Charge Conjugation Operator in Supermultiplet
improved clarity, formatting, grammar
Oct
23
suggested approved edit on Charge Conjugation Operator in Supermultiplet
Oct
22
comment Integration & bremsstrahlung calculation
The key comes from understanding how their Lorentz frame choices work. I haven't quite got the hang of it yet, but I'll have another go tomorrow. I think that once you've worked out how to get from III.8 to III.10 the same process reversed will get you from III.10 to III.13.
Oct
22
awarded  Nice Question
Oct
18
revised Philosophical Interpretation of String Theory
Improved spelling, grammar and overall question phrasing.
Oct
18
suggested approved edit on Philosophical Interpretation of String Theory
Oct
17
comment Integration & bremsstrahlung calculation
Hmm - yes I agree his reasoning looks very dodgy. Hopefully it's just a series of typos. Can you tell me what $\eta$ is? I can't find an appropriate definition in a quick scan of those paragraphs!