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2025-07-31
04:44
BSM: Extended Scalar Sectors / Robens, Tania (Boskovic Inst., Zagreb ; CERN) ; Santos, Rui (Lisbon, ISEL ; Lisbon U., CFTC)
In particle physics the world is described by a function, the Lagrangian. [...]
RBI-ThPhys-2025-031 ; CERN-TH-2025-148 ; arXiv:2507.21910. - 28.
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2025-07-31
04:42
Superradiance Constraints from GW231123 / Caputo, Andrea (CERN ; U. Rome La Sapienza (main) ; INFN, Rome) ; Franciolini, Gabriele (CERN) ; Witte, Samuel J. (Oxford U., Theor. Phys. ; DESY ; Hamburg U., Inst. Theor. Phys. II)
Gravitational wave observations have recently revealed with high significance, and high precision, the existence of $\mathcal{O}(100) \, M_\odot$ rapidly rotating black holes, allowing gravitational wave events to be used for the first time to probe unexplored axion parameter space using the phenomenon known as black hole superradiance. [...]
CERN-TH-2025-147 ; DESY-25-110 ; arXiv:2507.21788. - 15.
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2025-07-31
04:37
GSO Defects: IIA/IIB Walls and the Surprisingly Stable $\mathrm{R}7$-Brane / Heckman, Jonathan J. (Pennsylvania U., Dept. Math. ; Pennsylvania U.) ; McNamara, Jacob (Caltech) ; Parra-Martinez, Julio (IHES, Bures-sur-Yvette) ; Torres, Ethan (CERN)
The recently proposed Swampland Cobordism Conjecture predicts the existence of new non-supersymmetric objects which supplement the spectrum of low-energy gravitational effective field theories. [...]
CERN-TH-2025-136 ; arXiv:2507.21210. - 51.
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2025-07-28
12:45
Maximal parameter space of sterile neutrino dark matter with lepton asymmetries / Akita, Kensuke (Tokyo U.) ; Hamaguchi, Koichi (Tokyo U.) ; Ovchynnikov, Maksym (CERN)
Large lepton flavor asymmetries with zero total lepton asymmetry could be generated in the Early Universe. [...]
arXiv:2507.20659. - 2025 - 25.
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2025-07-26
04:55
Ultralight dark matter detection with trapped-ion interferometry / Badurina, Leonardo (Caltech) ; Blas, Diego (Barcelona, IFAE ; ICREA, Barcelona) ; Ellis, John (King's Coll. London ; CERN) ; Ellis, Sebastian A.R. (Geneva U., Dept. Theor. Phys.)
We explore how recent advances in the manipulation of single-ion wave packets open new avenues for detecting weak magnetic fields sourced by ultralight dark matter. [...]
arXiv:2507.17825 ; CALT-TH/2025-011 ; KCL-PH-TH/2025-29 ; CERN-TH-2025-125 ; AION-REPORT/2025-05. - 12.
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2025-07-25
04:07
EFT strings and dualities in 4d $\mathcal{N}=1$ / Grieco, Alessandra (Madrid, IFT ; Madrid, Autonoma U.) ; Ruiz, Ignacio (Madrid, IFT ; Madrid, Autonoma U.) ; Valenzuela, Irene (Madrid, IFT ; Madrid, Autonoma U. ; CERN)
We investigate the global structure of the states becoming light at perturbative limits of 4d $\mathcal{N}=1$ string and M-theory compactifications, identifying the different duality frames that emerge asymptotically and how they fit together in moduli space. [...]
arXiv:2504.16984 ; IFT-UAM/CSIC-25-39 ; CERN-TH-2025-086. - 80.
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2025-07-25
04:07
Thermal modifications of mesons and energy-energy correlators from real-time simulations of a $U(1)$ lattice gauge theory / Barata, João (CERN) ; Frenklakh, David (Brookhaven) ; Mukherjee, Swagato (Brookhaven)
We investigate thermal properties of a $U(1)$ lattice gauge theory in $1+1$-dimensions through real-time simulations. [...]
arXiv:2507.16890 ; CERN-TH-2025-133. - 10.
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2025-07-24
04:52
Gravitational Wave Scattering on Magnetic Fields / Domcke, Valerie (CERN) ; Garcia-Cely, Camilo (Valencia U., IFIC) ; Lee, Sung Mook (CERN)
The conversion of gravitational to electromagnetic waves in the presence of background magnetic fields is known as the inverse Gertsenshtein effect, analogous to the Primakoff effect for axions. [...]
CERN-TH-2025-142 ; arXiv:2507.16609. - 47.
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2025-07-24
04:44
Wino and Real Minimal Dark Matter Excluded by Fermi Gamma-Ray Observations / Safdi, Benjamin R. (UC, Berkeley ; LBL, Berkeley ; CERN) ; Xu, Weishuang Linda (KIPAC, Menlo Park ; SLAC)
We show that minimal, fermionic dark matter (DM) models in the $n$-dimensional representation of the weak force with zero hypercharge that make up 100% of the DM under the standard cosmological history are strongly excluded for $n < 9$. [...]
arXiv:2507.15934 ; CERN-TH-2025-137. - 20.
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2025-07-24
04:36
Symmetry energy dependence of the bulk viscosity of nuclear matter / Yang, Yumu (Illinois U., Urbana) ; Hippert, Mauricio (Rio de Janeiro, CBPF ; Rio de Janeiro State U.) ; Speranza, Enrico (CERN) ; Noronha, Jorge (Illinois U., Urbana)
We clarify how the weak-interaction-driven bulk viscosity $\zeta$ and the bulk relaxation time $\tau_\Pi$ of neutrino-transparent $npe$ matter depend on the nuclear symmetry energy. [...]
arXiv:2504.07805 ; CERN-TH-2025-078. - 12.
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