Zobrazeno 1 - 10
of 156 881
pro vyhledávání: '"P. Fermi"'
This paper investigates the origin of the $\gamma$-ray emission from MGRO J1908+06 in the GeV-TeV energy band. By analyzing the data collected by {\it Fermi}-LAT, VERITAS, and HAWC, with the addition of spectral data previously reported by LHAASO, a
Externí odkaz:
http://arxiv.org/abs/2408.01625
We calculate the exact spectral function of a single impurity repulsively interacting with a bath of fermions in one-dimensional lattices, by deriving the explicit expression of the form factor for both regular Bethe states and the irregular spin-fli
Externí odkaz:
http://arxiv.org/abs/2411.17895
Search for the multiwavelength counterparts to extragalactic unassociated Fermi {\gamma}-ray sources
Autor:
Ulgiati, Alberto, Paiano, Simona, Pintore, Fabio, Russell, Thomas David, Sbaruffati, Boris, Pinto, Ciro, Ambrosi, Elena, Ai, Antonino D, Cusumano, Giancarlo, Del Santo, Melania
Aims. In this paper, we searched for multi-wavelength (X-ray, optical and radio) counterparts to the unassociated gamma-ray sources (UGS) of the Fermi 4FGL-DR4 catalog. The main goal is to identify new blazars and/or new active galactic nuclei (AGNs)
Externí odkaz:
http://arxiv.org/abs/2412.19314
Autor:
Cheng, Ji-Gui, Zou, Le
Numerical simulations suggest that dark matter halos surrounding galaxies host numerous small subhalos, which might be detectable by the Fermi-LAT. In this work, we revisit the search for gamma-ray subhalo candidates using the latest Fermi-LAT 4FGL-D
Externí odkaz:
http://arxiv.org/abs/2412.18736
Since the discovery of heavy-fermion superconductivity in CeCu$_{2}$Si$_{2}$, the material has attracted great interest particularly with regard to the nature of the superconducting pairing and its mechanism. Consequently, it is essential to better u
Externí odkaz:
http://arxiv.org/abs/2412.18183
Autor:
Chalopin, Thomas, Bojović, Petar, Wang, Si, Franz, Titus, Sinha, Aritra, Wang, Zhenjiu, Bourgund, Dominik, Obermeyer, Johannes, Grusdt, Fabian, Bohrdt, Annabelle, Pollet, Lode, Wietek, Alexander, Georges, Antoine, Hilker, Timon, Bloch, Immanuel
In strongly correlated materials, interacting electrons are entangled and form collective quantum states, resulting in rich low-temperature phase diagrams. Notable examples include cuprate superconductors, in which superconductivity emerges at low do
Externí odkaz:
http://arxiv.org/abs/2412.17801
Autor:
Lee-Hand, Jeremy, LaBollita, Harrison, Kugler, Fabian B., Van Muñoz, Lorenzo, Kaye, Jason, Beck, Sophie, Hampel, Alexander, Georges, Antoine, Dreyer, Cyrus E.
Direct-current resistivity is a key probe for the physical properties of materials. In metals, Fermi-liquid (FL) theory serves as the basis for understanding transport. A $T^2$ behavior of the resistivity is often taken as a signature of FL electron-
Externí odkaz:
http://arxiv.org/abs/2412.16363
We describe the evolution of low-temperature thermopower across Fermi-volume-changing quantum phase transitions in Kondo lattice models without symmetry breaking. This transition moves from a heavy Fermi liquid with a conventional Luttinger-volume la
Externí odkaz:
http://arxiv.org/abs/2412.15330
Autor:
Zhussupbekov, Kuanysh, Walshe, Killian, Walls, Brian, Ionov, Andrei, Bozhko, Sergei I., Ksenz, Andrei, Mozhchil, Rais N., Zhussupbekova, Ainur, Fleischer, Karsten, Berman, Samuel, Zhilyaev, Ivan, O'Regan, David D., Shvets, Igor V.
Publikováno v:
J. Phys. Chem. C 2021, 125, 10, 5549-5558
Defects introduced to the surface of Bi(111) break the translational symmetry and modify the surface states locally. We present a theoretical and experimental study of the 2D defects on the surface of Bi(111) and the states that they induce. Bi cryst
Externí odkaz:
http://arxiv.org/abs/2412.15313
Autor:
Himes, Morgan, Jagannathan, Preshanth, Frail, Dale, Schinzel, Frank, Gupta, Neeraj, Balashev, S. A., Combes, F., Deka, P. P., Klockner, H. -R, Momjian, Emmanuel, Wagenveld, Jonah
Over 2000 Gamma ray sources identified by the Large Area Telescope (LAT) on NASA's Fermi Gamma-ray Space Telescope are considered unassociated, meaning that they have no known counterparts in any other frequency regime. We have carried out an image-b
Externí odkaz:
http://arxiv.org/abs/2412.12470