Vertex Representation of Hyperbolic Tensor Networks

Autor: Mosko, Matej, Polackova, Maria, Krcmar, Roman, Gendiar, Andrej

We propose a vertex representation of the tensor network (TN) in the anti-de Sitter space (AdS$_{2+0}$) that we model on a subset of hyperbolic lattices. The tensors form a network of regular $p$-sided polygons ($p>4$) with the coordination number fo

Externí odkaz: http://arxiv.org/abs/2406.03426

Ising ferromagnets and antiferromagnets in an imaginary magnetic field

Autor: Krčmár, Roman, Gendiar, Andrej, Šamaj, Ladislav

Publikováno v: Phys. Rev. E 105 (2022) 054112

We study classical Ising spin-$\frac{1}{2}$ models on the 2D square lattice with ferromagnetic or antiferromagnetic nearest-neighbor interactions, under the effect of a pure imaginary magnetic field. The complex Boltzmann weights of spin configuratio

Externí odkaz: http://arxiv.org/abs/2112.09536

Entanglement-entropy study of phase transitions in six-state clock model

Autor: Krčmár, Roman, Gendiar, Andrej, Nishino, Tomotoshi

Publikováno v: Acta Physica Polonica A 137 (2020) 598

The Berezinskii-Kosterlitz-Thouless (BKT) transitions of the six-state clock model on the square lattice are investigated by means of the corner-transfer matrix renormalization group method. A classical analog of the entanglement entropy $S( L, T )$

Externí odkaz: http://arxiv.org/abs/2003.10718

Full nonuniversality of the symmetric 16-vertex model on the square lattice

Autor: Pospíšilová, Eva, Krčmár, Roman, Gendiar, Andrej, Šamaj, Ladislav

Publikováno v: Phys. Rev. E 102, 012125 (2020)

We consider the symmetric two-state 16-vertex model on the square lattice whose vertex weights are invariant under any permutation of adjacent edge states. The vertex-weight parameters are restricted to a critical manifold which is self-dual under th

Externí odkaz: http://arxiv.org/abs/2002.02757

Physics potential of the International Axion Observatory (IAXO)

Autor: Armengaud, E., Attie, D., Basso, S., Brun, P., Bykovskiy, N., Carmona, J. M., Castel, J. F., Cebrián, S., Cicoli, M., Civitani, M., Cogollos, C., Conlon, J. P., Costa, D., Dafni, T., Daido, R., Derbin, A. V., Descalle, M. A., Desch, K., Dratchnev, I. S., Döbrich, B., Dudarev, A., Ferrer-Ribas, E., Fleck, I., Galán, J., Galanti, G., Garrido, L., Gascon, D., Gastaldo, L., Germani, C., Ghisellini, G., Giannotti, M., Giomataris, I., Gninenko, S., Golubev, N., Graciani, R., Irastorza, I. G., Jakovcic, K., Kaminski, J., Krcmar, M., Krieger, C., Lakić, B., Lasserre, T., Laurent, P., Limousin, O., Lindner, A., Lomskaya, I., Lubsandorzhiev, B., Luzón, G., Marsh, M. C. D., Mergalejo, C., Mescia, F., Meyer, M., Miralda-Escudé, J., Mirallas, H., Muratova, V. N., Navick, X. F., Nones, C., Notari, A., Nozik, A., de Solórzano, A. Ortiz, Pantuev, V., Papaevangelou, T., Pareschi, G., Perez, K., Picatoste, E., Pivovaroff, M. J., Redondo, J., Ringwald, A., Roncadelli, M., Ruiz-Chóliz, E., Ruz, J., Saikawa, K., Salvadó, J., Samperiz, M. P., Schiffer, T., Schmidt, S., Schneekloth, U., Schott, M., Silva, H., Tagliaferri, G., Takahashi, F., Tavecchio, F., Kate, H. ten, Tkachev, I., Troitsky, S., Unzhakov, E., Vedrine, P., Vogel, J. K., Weinsheimer, C., Weltman, A., Yin, W.

We review the physics potential of a next generation search for solar axions: the International Axion Observatory (IAXO). Endowed with a sensitivity to discover axion-like particles (ALPs) with a coupling to photons as small as $g_{a\gamma}\sim 10^{-

Externí odkaz: http://arxiv.org/abs/1904.09155