Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fixed-Point Hamiltonians in Quantum Mechanics   We show how to derive fixed-point Hamiltonians in quantum mechanics from a
proposed renormalization group invariance approach that relies in a subtraction
procedure at a given energy scale. The scheme is valid for arbitrary
interactions that originally contain point-like singularities (as the
Dirac-delta and/or its derivatives). One example of diagonalization of a
fixed-point Hamiltonian illustrates the procedure for an interaction that
contains regular and singular parts. In another example, the fixed point
Hamiltonian is derived for the case of higher order singularities in the
interaction.

13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex