Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum nucleation of effective Minkowski spacetime in hyperbolic
  metamaterials based on high Tc superconductors   We demonstrate that high Tc superconductors exhibit hyperbolic metamaterial
behavior in the far infrared and THz frequency ranges. In the THz range the
hyperbolic behavior occurs only in the normal state, while no propagating modes
exist in the superconducting state. Wave equation, which describes propagation
of extraordinary light inside a hyperbolic metamaterial exhibits 2+1
dimensional Lorentz symmetry. The role of time in the corresponding effective
3D Minkowski spacetime is played by the spatial coordinate aligned
perpendicular to the copper oxide layers. Such superconductor-based hyperbolic
metamaterials exhibit a quantum phase transition at T=0, in which the effective
Minkowski spacetime arise in the mixed state of the superconductor at some
critical value of external magnetic field. Nucleation of Minkowski spacetime
occurs via formation of quantized Abrikosov vortices, so that these vortices
play the role of effective Minkowski spacetime quanta.

10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th