“…We explore a promising framework in two dimensions, the Dirac spin liquid (DSL) — quantum electrodynamics (QED(3)) with 4 Dirac fermions coupled to photons. Importantly, its excitations include magnetic monopoles that drive confinement. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Spin-gapless semiconductors (SGSs) with Dirac-like band crossings may exhibit massless fermions and dissipationless transport properties. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Our results provide an effective approach to achieve the dynamic regime beyond the widely-investigated DC limit which enables the coupling between the Weyl fermions and the electromagnetic wave for further study of novel light-matter interactions in Weyl semimetals.…”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Large value of 100% spin-polarized or pure spin thermopower emerges even in the absence of Zeeman splitting in the QD or magnetic electrodes because the MBSs are coupled to electrons of only one certain spin direction in the QD due to the chiral nature of the Majorana fermions. Moreover, the magnitude of the thermopower will be obviously enhanced by the existence of MBSs.…”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…The results are in good agreement with a theory accounting for the composite nature of excitons and trions and deviation of their statistics from that of ideal bosons and fermions. Our findings open a way to scalable quantum optics applications with TMDCs.…”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…We discuss two models featuring a composite Higgs, Dark Matter and partial compositeness for all SM fermions. The UV theories can also be embedded in a Pati–Salam partial unification, thus removing the instability generated by the [Formula: see text] running. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Using a Drude model for Dirac fermions in graphene and a fitting method based on statistical signal analysis, we extract transport properties such as the charge carrier density and carrier mobility. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…A large and ideal Rashba-type spin-orbit splitting is desired for the applications of materials in spintronic devices and the detection of Majorana fermions in solids. Here, we propose an approach to achieve giant and ideal spin-orbit splittings through a combination of ordered surface alloying and interface engineering, that is, growing alloy monolayers on an insulating polar surface. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Drawing an analogy between electrons and photons, artificially designed optical lattices indicate the possibility of a similar band modulation effect in graphene systems. Yet due to the fermionic nature of electrons, modulated electronic systems promise far richer categories of behaviors than those found in optical lattices. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Working with a quantum gas of ultracold fermionic (6)Li atoms with tunable interactions, we show that the second sound speed varies only slightly in the crossover regime. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…The expectation value of this energy shift is then computed explicitly using the Fourier transforms of the fermionic fields. To first order in the electromagnetic fields, the average relativistic energy shift is found to be completely independent of the electron spin-polarization coefficients. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…The extension takes mainly into account that now the carriers are massive Dirac fermions. Our simulations reveal that the photovoltage in these graphene systems presents important oscillations similar to the ones of irradiated magnetoresistance in semiconductor platforms but in the terahertz range. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…By using Veneziano type beta functions consistent with crossing symmetry, duality and Regge behavior, bosonic or fermionic resonances in each channel were included, while the low energy behavior was matched to effective field theory non-renormalizable interactions consistent with the Standard Model SU(3)xSU(2)xU(1) gauge symmetry as well as global flavor and family symmetries. …”
Enlace del recurso

“…In this work we focus on the implications of one of these models, the top-flavor model (TF), proposing a charged <math display="inline"><msup><mi>W</mi><mo>′</mo></msup></math> boson that has preferential couplings to the third-generation fermions. We compare such predictions to the ones from the so-called sequential Standard Model (SSM), that is used as benchmark, being one of the simplest and most commonly considered models for searches at the LHC. …”
Enlace del recurso
Enlace del recurso

“…We employ an ensemble generated by the Extended Twisted Mass Collaboration with <math display="inline"><msub><mi>N</mi><mi>f</mi></msub><mo>=</mo><mn>2</mn><mo>+</mo><mn>1</mn><mo>+</mo><mn>1</mn></math> Wilson twisted mass clover fermions at maximal twist tuned to reproduce the physical pion mass. …”
Enlace del recurso
Enlace del recurso

“…In particular, we consider the gravitational production of dark matter (scalar or fermionic) from the thermal bath as well as from scattering of the inflaton condensate. …”
Enlace del recurso
Enlace del recurso

“…We study the effects of ordering fermionic excitation operators in the unitary coupled clusters ansatz on the VQE algorithm convergence by using only operators preserving the <math><msub><mi>J</mi><mi>z</mi></msub></math> quantum number. …”
Enlace del recurso
Enlace del recurso

“…The calculation is performed at fixed lattice spacing (a$^{−1}$ ≃ 1.730 GeV) on a 48$^{3}$× 96 volume with N$_{f}$ = 2 + 1 dynamical quarks close to the physical point and domain wall fermions in the Möbius formulation are employed. Long-distance QED interactions are included according to the QED$_{L}$ prescription and the crucial role of finite-volume electromagnetic corrections in the determination of leptonic decay rates, which produce a large systematic uncertainty, is extensively discussed. …”
Enlace del recurso
Enlace del recurso

“…In particular, using the Distance/Duality conjecture and the smallness of dark energy, we predict the existence of a light tower of states and a unique extra mesoscopic dimension of length $ l\sim {\Lambda}^{-\frac{1}{4}}\sim {10}^{-6}m $, with extra massless fermions propagating on it. This automatically leads to a candidate for a tower of sterile neutrinos, and an associated active neutrino mass scale $ {m}_{\nu}\sim {\left\langle H\right\rangle}^2{\Lambda}^{-\frac{1}{12}}{M}_{\textrm{pl}}^{-\frac{2}{3}} $. …”
Enlace del recurso
Enlace del recurso

“…For QCD we observe below T_c a reduction of the topological susceptibility as an effect of the dynamical fermions. Nevertheless also here the instantons form a dense ensemble with general characteristics similar to those of the quenched theory. …”
Enlace del recurso