Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Superfluidity and Space-Time Translation Symmetry Breaking   I present a simple model that exhibits a temporal analogue of superconducting
crystalline (LOFF) ordering. I sketch designs for minimally dissipative AC
circuits, all based on time translation symmetry ($\tau$) invariant dynamics,
exploiting weak links (Josephson effects). These systems violate $\tau$
spontaneously. I also discuss effective theories of that phenomenon, and
space-time generalizations.

32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph