Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Construction of an Effective Hamiltonian from Feynman Diagrams:
  Application to the Light-Front Yukawa Model   We study a similarity transformation to construct an effective Hamiltonian
systematically, which does not contain particle-number-changing interactions,
by means of Fukuda-Sawada-Taketani-Okubo's method. We show that such
Hamiltonian can be constructed from Feynman diagrams and give rules for
constructing it in the Light-Front Yukawa model. We prove that it is
renormalized by the familiar covariant perturbative renormalization procedure.
It is very advantageous that the effective Hamiltonian can be obtained from our
rules {\em immediately}. We also numerically diagonalize it to the second order
in the coupling constant as an exercise.

0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th