Zobrazeno 1 - 10
of 759
pro vyhledávání: '"Gorbunov, D. A."'
We study domain walls (DWs) arising in field theories where $Z_2$-symmetry is spontaneously broken by a scalar expectation value decreasing proportionally to the Universe temperature. The energy density of such melting DWs redshifts sufficiently fast
Externí odkaz:
http://arxiv.org/abs/2410.21971
Autor:
Heinze, L., Kotte, T., Rausch, R., Demuer, A., Luther, S., Feyerherm, R., Ammerlaan, A. A. L. N., Zeitler, U., Gorbunov, D. I., Uhlarz, M., Rule, K. C., Wolter, A. U. B., Kühne, H., Wosnitza, J., Karrasch, C., Süllow, S.
We report an extensive high-field study of atacamite Cu$_2$Cl(OH)$_3$, a material realization of quantum sawtooth chains with weak interchain couplings, in continuous and pulsed magnetic fields up to 58 T. In particular, we have mapped the entropy la
Externí odkaz:
http://arxiv.org/abs/2410.01947
In this study, we probe the coupling between magnetism and lattice dynamics in UO2, a 3k antiferromagnet that undergoes magnetic ordering below its Neel temperature (TN) of 30.8 K. Ultrasound measurements provide insights into the interplay between t
Externí odkaz:
http://arxiv.org/abs/2409.20228
Publikováno v:
Phys. Rev. D 110, 123026 (2024)
In this paper we present new constraints on the velocity-independent cross section of keV-scale mass annihilating Dark Matter particles obtained with SRG/ART-XC after 4 full-sky surveys. These constraints are derived from observations of the Milky Wa
Externí odkaz:
http://arxiv.org/abs/2407.18371
Publikováno v:
JCAP09(2024)047
Employing the publicly available CosmoLattice code, we conduct numerical simulations of a domain wall network and the resulting gravitational waves (GWs) in a radiation-dominated Universe in the $Z_2$-symmetric scalar field model. In particular, the
Externí odkaz:
http://arxiv.org/abs/2406.17053
Publikováno v:
Phys. Rev. Lett. 133, 261002 (2024)
Using tremendous photon statistics gained with the stray light aperture of the NuSTAR telescope over 11 years of operation, we set strong limits on the emission of close to monochromatic photons from the radiative decays of putative dark matter steri
Externí odkaz:
http://arxiv.org/abs/2405.17861
Autor:
Bermond, B., Wawrzynczak, R., Zherlitsyn, S., Kotte, T., Helm, T., Gorbunov, D., Gu, G. D., Li, Q., Janasz, F., Meng, T., Menges, F., Felser, C., Wosnitza, J., Grushin, Adolfo G., Carpentier, David, Gooth, J., Galeski, S.
Oscillations of conductance observed in strong magnetic fields are a striking manifestation of the quantum dynamics of charge carriers in solids. The large charge carrier density in typical metals sets the scale of oscillations in both electrical and
Externí odkaz:
http://arxiv.org/abs/2402.17022
Autor:
Galeski, S., Araki, K., Forslund, O. K., Wawrzynczak, R., Legg, H. F., Sivakumar, P. K., Miniotaite, U., Elson, F., Månsson, M., Witteveen, C., von Rohr, F. O., Baron, A. Q. R., Ishikawa, D., Li, Q., Gu, G., Zhao, L. X., Zhu, W. L., Chen, G. F., Wang, Y., Parkin, S. S. P., Gorbunov, D., Zherlitsyn, S., Vlaar, B., Nguyen, D. H., Paschen, S., Narang, P., Felser, C., Wosnitza, J., Meng, T., Sassa, Y., Hartnoll, S. A., Gooth, J.
Appearance of quantum oscillations (QO) in both thermodynamic and transport properties of metals at low temperatures is the most striking experimental consequence of the existence of a Fermi surface (FS). The frequency of these oscillations and the t
Externí odkaz:
http://arxiv.org/abs/2309.10480
Publikováno v:
Phys. Rev. D 108, 123529 (2023)
We discuss cosmic domain walls described by a tension red-shifting with the expansion of the Universe. These melting domain walls emit gravitational waves with the low-frequency spectral shape $\Omega_{gw}\propto f^{2}$ corresponding to the spectral
Externí odkaz:
http://arxiv.org/abs/2307.04582
Autor:
Zakharov, E. I., Barinov, V. V., Burenin, R. A., Gorbunov, D. S., Krivonos, R. A., Tkachenko, A. Yu., Arefiev, V. A., Filippova, E. V., Grebenev, S. A., Lutovinov, A. A., Mereminsky, I. A., Sazonov, S. Yu., Semena, A. N., Shtykovsky, A. E., Sunyaev, R. A.
Publikováno v:
Phys. Rev. D 109, L021301 (2024)
Dark matter sterile neutrinos radiatively decay in the Milky Way, which can be tested with searches for almost monochromatic photons in the X-ray cosmic spectrum. We analyse the data of SRG/ART-XC telescope operated for two years in the all-sky surve
Externí odkaz:
http://arxiv.org/abs/2303.12673