Frederic Brünner

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60 Answers

newest activity votes
5
Lorentz transformation problem
5
Geometrical significance of gauge invariance of the QED Lagrangian
4
Irreducible Representations Of Lorentz Group
4
4-velocity and electromagnetic fields
3
Boundary conditions of relativistic wave solutions?
3
Reason for considering the positive root
3
Electric force on spherical surface
3
Scalar field lagrangian and potential
3
proof of radius of convergence of perturbation series in quantum electrodynamics zero
3
Tachyonic antitelephone vs messaging through a wormhole
3
What is 'past null infinity'?
3
What is the experimental status of AdS/CFT, AdS/QCD, AdS/CMT, etc?
3
Elegant approaches to quantum field theory
2
What is tricritical point？
2
Is time going backwards beyond the event horizon of a black hole?
2
Why is $R^2$ gravity not unitary?
2
Does a photon have a north and south pole?
2
Higgs-Boson/Graviton
2
Ashcroft Mermin Eq. 17.47ff
2
Gravity duals to Navier Stokes and interpretation of non linear contributions
2
Klein-Gordon inner product
2
Bowling ball on a rubber sheet analogy - what pulls the ball down
2
$U(1)$ beta function of low energy effective Seiberg-Witten theory
2
Construction of the supersymmetric Faraday tensor
1
North and south of magnetic field
1
What is the exact relationship between on-shell amplitudes and off-shell correlators in AdS/CFT?
1
Is it possible to “add cold” or to “add heat” to systems?
1
Dimensional analysis - the argument of functions
1
Calculate the center of mass of a semicircle
1
Acoustic wave equation for a closed sphere
1 2