kĪlso at Departamento de Fisica e Astronomia, Faculdade de Ciencias, Universidade do Porto, Portugal. jĪlso at Departament de Fisica de la Universitat Autonoma de Barcelona, Barcelona, Spain. ![]() iĪlso at II Physikalisches Institut, Georg-August-Universität, Göttingen, Germany. hĪlso at Department of Physics, University of Fribourg, Fribourg, Switzerland. gĪlso at Department of Physics, California State University, Fresno CA, United States of America. fĪlso at Physics Department, An-Najah National University, Nablus, Palestine. dĪlso at Department of Physics & Astronomy, University of Louisville, Louisville, KY, United States of America. cĪlso at Novosibirsk State University, Novosibirsk, Russia. bĪlso at Institute of Physics, Azerbaijan Academy of Sciences, Baku, Azerbaijan. All search results are consistent with the expectations for the background due to Standard Model processes, and 95% CL upper limits are set, as a function of XH and X masses, on the production cross-section of the XH → q q ¯ ′ b b ¯ resonance.Īlso at Department of Physics, King's College London, London, United Kingdom. A two-dimensional phase space of XH mass versus X mass is scanned for evidence of a signal, over a range of XH resonance mass values between 1 TeV and 4 TeV, and for X particles with masses from 50 GeV to 1000 GeV. The search considers the regime of high XH resonance masses, where the X and H bosons are both highly Lorentz-boosted and are each reconstructed using a single jet with large radius parameter. The particle X is assumed to decay to a pair of light quarks, and the fully hadronic final state XH → q q ¯ ′ b b ¯ is analysed. Our approach can be combined with ab initio electronic structure methods, such as density-functional theory, paving the way for investigating novel superconductivity and phase transitions in realistic correlated materials.A search for heavy resonances decaying into a Higgs boson ( H) and a new particle ( X) is reported, utilizing 36.1 fb −1 of proton–proton collision data at s = 13 TeV collected during 20 with the ATLAS detector at the CERN Large Hadron Collider. We also show that the resulting superconducting phase diagram is in good qualitative agreement with more sophisticated dynamical mean-field theory. We extend the method to compute two-particle response functions and apply our approach to investigate the origin of an interesting type of superconducting pairing, emerging from a bad metallic state due to strong electronic interactions.īy computing the pairing interaction between electrons, including all the scattering channels, we show that the superconducting pairing is mediated by the fluctuations (creation and annihilation) of the local electron pairs, which breaks the conservation of the local particle number. Our method is based on the rotationally invariant slave-boson framework, which is an efficient and reliable approach to study the electronic correlation effects in materials. Here, we develop an efficient theoretical approach for studying the two-particle response functions in strongly correlated systems, allowing for the investigation of arbitrary phase transitions induced from local electronic correlation effects. However, the methodologies for calculating these response functions for strongly correlated materials are usually computationally intensive, hindering applications to material design. Two-particle response functions are essential for describing how electrons pair up in unconventional superconductors. Our approach paves the way for investigating the pairing mechanism in realistic correlated materials. ![]() On the other hand, the particle-hole spin fluctuations induce the s-wave pairing instability before entering Hund’s regime. ![]() By computing the pairing interaction considering the particle-particle and the particle-hole scattering channels, we identify the mechanism leading to the pairing instability around Hund’s metal crossover arises from the particle-particle channel, which contains the local electron pair fluctuation between different particle-number sectors of the atomic Hilbert space. The method is applied to the degenerate three-orbital Hubbard-Kanamori model for investigating the origin of the s-wave orbital antisymmetric spin-triplet superconductivity in Hund’s metal regime, previously found in the dynamical mean-field theory studies. We develop an efficient approach for computing two-particle response functions and interaction vertices for multiorbital strongly correlated systems based on the rotationally invariant slave-boson framework.
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