The SLAC bag model is a simple theoretical model for a possible structure for
hadron
In particle physics, a hadron (; grc, ἁδρός, hadrós; "stout, thick") is a composite subatomic particle made of two or more quarks held together by the strong interaction. They are analogous to molecules that are held together by the ele ...
s. The
MIT bag model is another similar model.
The "SLAC" in the name stands for
Stanford Linear Accelerator Center
SLAC National Accelerator Laboratory, originally named the Stanford Linear Accelerator Center,
is a United States Department of Energy National Laboratories, United States Department of Energy National Laboratory operated by Stanford Univers ...
.
The
chiral bag model is a variant of the MIT bag model that couples pions to the bag boundary, with the pion field being modeled by the
Skyrmion
In particle theory, the skyrmion () is a topologically stable field configuration of a certain class of non-linear sigma models. It was originally proposed as a model of the nucleon by (and named after) Tony Skyrme in 1961. As a topological sol ...
. In this model, the boundary condition is that the
axial vector current
Axial may refer to:
* one of the anatomical directions describing relationships in an animal body
* In geometry:
:* a geometric term of location
:* an axis of rotation
* In chemistry, referring to an axial bond
* a type of modal frame, in music
...
is continuous across the boundary, with free (non-interacting) quarks on the inside, obeying the boundary condition.
See also
*
Fermi ball In cosmology, Fermi balls are hypothetical objects that may have been created in the early history of the universe by spontaneous symmetry breaking. One paper has described them as "charged SLAC bag, SLAC-bag type structures". Fermi balls can be mod ...
References
Particle physics
{{nuclear-stub