Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Top quark induced vacuum misalignment in little higgs models   We show that the effect of the top quark can dominate over the effect of the
gauge sector in determining the vacuum alignment in little higgs (LH) models.
We demonstrate that in the littlest LH model and the SU(2)xSU(2)xU(1) LH model,
ensuring that the correct vacuum alignment is chosen requires that a subset of
the gauge sector couplings be large to overcome the effect of the top quark. We
quantify this effect by deriving bounds on the couplings in the gauge sector
and demonstrate that these bounds provide a compelling theoretical reason for
the gauge coupling constant hierarchy in the SU(2)xSU(2)xU(1) model that
reduces the Goldstone decay constant scale to a TeV. We also argue that for a
class of LH models with T parity the top quark drives the correct vacuum
alignment and therefore all gauge couplings can be small.

25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an