19,200 reputation
3669
bio website mat.univie.ac.at/~neum
location Vienna, Austria
age
visits member for 3 years, 1 month
seen 12 hours ago

I am currently primarily active on Physics Overflow. Here I mainly respond to comments on my old postings, sometimes upon request by email, and sometimes because I happen to see an interesting question for which I know a quick but useful answer. Occasionally I also post purely mathematical questions.

Some physics material I wrote:

  • A theoretical physics FAQ
  • Classical and Quantum Mechanics via Lie algebras
  • Renormalization without infinities - an elementary tutorial
  • Classical and quantum field aspects of light
  • Optical models for quantum mechanics
  • Molecular modeling of proteins and mathematical prediction of protein structure


  • Mar
    8
    comment Does the existence of instantons imply non-trivial cohomology of spacetime?
    There is an answer at physicsoverflow.org/27926
    Mar
    8
    comment Reference request: Relation between $Sp(N)$, $Spin(N) $, $SU(N)$ groups and physics
    There is a specific answer at physicsoverflow.org/25980
    Mar
    8
    comment Questions regarding $D=4 $ ${\cal N}=4$ supersymmetric Yang-Mills
    There is an answer at physicsoverflow.org/26677
    Mar
    8
    comment Why is there an Euler density in SCFT $T_{\mu}^{\nu}$?
    There is an answer at physicsoverflow.org/25564
    Mar
    7
    comment Forming massive $\mathcal{N} = 2$ supermultiplets
    There is an answer at physicsoverflow.org/25692
    Mar
    7
    comment Why the bosonic part of the superconformal group $SU(2,2|1)$ is $SO(4,1) \times U(1)_R$?
    There is an answer at physicsoverflow.org/25607
    Mar
    7
    comment How to prove explicitly that by including Dirac fermions into the Einstein-Hilbert action we make torsion to be non-zero?
    There is another answer at physicsoverflow.org/25818
    Mar
    4
    awarded  Popular Question
    Mar
    4
    comment What is the difference between the groups $PSU(N)$ and $SU(N)$?
    an answer can be found at physicsoverflow.org/26876
    Mar
    4
    comment Quivers Representations in SUSY gauge theories
    An answer can be found at physicsoverflow.org/27087
    Mar
    4
    comment Why has the Higgs potential the form it has?
    @JamalS: I edited my post accordingly.
    Mar
    4
    revised Why has the Higgs potential the form it has?
    added condition on the dimension
    Mar
    4
    comment Majorana zero mode and 1D Ising model
    There is an answer at physicsoverflow.org/27103
    Mar
    4
    comment Quantum fields from cluster-decomposition principle
    There is an answer at physicsoverflow.org/27619
    Mar
    3
    answered Is there an exact formal definition of the Universe?
    Mar
    1
    awarded  Yearling
    Mar
    1
    answered Do negative numbers have any physical meaning?
    Feb
    24
    comment A book on quantum mechanics supported by the high-level mathematics
    @0celo7: You need a thorough knowledge of classical analysis, and some acquaintance with differential geometry and functional analysis. Apart from that, the book gives references to additional reading, including more specialized background needed.
    Jan
    7
    comment Will ideal gas law apply to plasma?
    @honeste_vivere: In some approximation, a plasma becomes a Thomas-Fermi gas. This is far from ideal.
    Dec
    28
    awarded  Necromancer