Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Adiabatic spin cooling using high-spin Fermi gases   Spatial entropy redistribution plays a key role in adiabatic cooling of
ultra-cold lattice gases. We show that high-spin fermions with a spatially
variable quadratic Zeeman coupling may allow for the creation of an inner
spin-1/2 core surrounded by high-spin wings. The latter are always more
entropic than the core at high temperatures and, remarkably, at all
temperatures in the presence of frustration. Combining thermodynamic Bethe
Ansatz with local density approximation, we study the spatial entropy
distribution for the particular case of one-dimensional spin-3/2 lattice
fermions in the Mott phase. Interestingly, this spatially dependent entropy
opens a possible path for an adiabatic cooling technique that, in contrast to
previous proposals, would specifically target the spin degree of freedom. We
discuss a possible realization of this adiabatic cooling, which may allow for a
highly efficient entropy decrease in the spin-1/2 core and help access
antiferromagnetic order in experiments on ultracold spinor fermions.

21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas