Results 31 to 40 of about 394,905 (330)

Phenomenological models of Universe with varying $G$ and $\Lambda$ [PDF]

, 2014
In this article we will consider several phenomenological models for the Universe with varying $G$ and $\Lambda(t)$, where $G$ is the gravitational "constant" and $\Lambda(t)$ is a varying cosmological "constant".
Khurshudyan, M.
core   +2 more sources

Phenomenological modeling of memristive devices [PDF]

Applied Physics A, 2015
We present a computationally inexpensive yet accurate phenomenological model of memristive behavior in titanium dioxide devices by fitting experimental data. By design, the model predicts most accurately I-V relation at small non-disturbing electrical stresses, which is often the most critical range of operation for circuit modeling.
Merrikh Bayat, F., Hoskins, B., Strukov, D. B.   +2 more
openaire   +2 more sources

Universal relations in composite Higgs models

Journal of High Energy Physics, 2019
We initiate a phenomenological study of “universal relations” in composite Higgs models, which are dictated by nonlinear shift symmetries acting on the 125 GeV Higgs boson.
Da Liu, Ian Low, Zhewei Yin
doaj   +1 more source

Two-body lepton-flavour-violating decays in a 2HDM with soft family-lepton-number breaking

Journal of High Energy Physics, 2022
We evaluate the decays ℓ 1 ± $$ {\ell}_1^{\pm } $$ → ℓ 2 ± γ $$ {\ell}_2^{\pm}\gamma $$ , Z → ℓ 1 + ℓ 2 − $$ {\ell}_1^{+}{\ell}_2^{-} $$ , and h → ℓ 1 + ℓ 2 − $$ {\ell}_1^{+}{\ell}_2^{-} $$ , where ℓ 1 and ℓ 2 are charged leptons with different flavours ...
Darius Jurčiukonis, Luís Lavoura
doaj   +1 more source

Fitting the Zb b ¯ $$ Zb\overline{b} $$ vertex in the two-Higgs-doublet model and in the three-Higgs-doublet model

Journal of High Energy Physics, 2021
We investigate the new contributions to the parameters g L and g R of the Zb b ¯ $$ Zb\overline{b} $$ vertex in a multi-Higgs-doublet model (MHDM). We emphasize that those contributions generally worsen the fit of those parameters to the experimental ...
Darius Jurčiukonis, Luís Lavoura
doaj   +1 more source

Phenomenological modeling of geometric metasurfaces

Optics Express, 2016
Metasurfaces, with their superior capability in manipulating the optical wavefront at the subwavelength scale and low manufacturing complexity, have shown great potential for planar photonics and novel optical devices. However, vector field simulation of metasurfaces is so far limited to periodic-structured metasurfaces containing a small number of ...
Ye, Weimin, Guo, Qinghua, Xiang, Yuangjiang, Fan, Dianyuan, Zhang, Shuang   +4 more
openaire   +4 more sources

Searches for other vacua. Part I. Bubbles in our universe

Journal of High Energy Physics, 2019
We discuss models in which vacua other than our own can be directly observed in the present universe. Models with density-dependent vacuum structure can give rise to ‘non-lethal’-vacua: vacua with lower energy-density than our vacuum, but only in regions
Anson Hook, Junwu Huang
doaj   +1 more source

Three Generations in Type I Compactifications [PDF]

, 1998
Generalizing the recent work on three-family Type I compactifications, we classify perturbative Type I vacua obtained via compactifying on the T^6/Z_2 X Z_2 X Z_3 orbifold with all possible Wilson lines. In particular, we concentrate on models with gauge
A. Dabholkar, A. Sagnotti, C. Angelantonj, C.G. Callan, C.G. Callan, D.C. Dunbar, E. Witten, E.G. Gimon, E.G. Gimon, G. Pradisi, G. Zwart, J. Dai, J. Lykken, J. Polchinski, J. Polchinski, J. Polchinski, M. Berkooz, M. Bianchi, M. Bianchi, N. Arkani-Hamed, N. Ishibashi, P. Hořava, P. Hořava, R.G. Leigh, S.-H. Henry Tye, S.M. Roy, S.M. Roy, Z. Bern, Z. Kakushadze, Z. Kakushadze, Z. Kakushadze, Z. Kakushadze, Zurab Kakushadze   +32 more
core   +3 more sources

Measuring properties of a Heavy Higgs boson in the H→tt¯→bW+b¯W− $$ H\to t\overline{t}\to b{W}^{+}\overline{b}{W}^{-} $$ decay

Journal of High Energy Physics, 2018
Suppose a heavy neutral Higgs or scalar boson H is discovered at the LHC, it is important to investigate its couplings to the standard model particles as much as possible.
Jung Chang, Kingman Cheung, Jae Sik Lee, Chih-Ting Lu, Jubin Park   +4 more
doaj   +1 more source

Long-lived sterile neutrinos at Belle II in effective field theory

Journal of High Energy Physics, 2022
Large numbers of τ leptons are produced at Belle II. These could potentially decay into sterile neutrinos that, for the mass range under consideration, are typically long-lived, leading to displaced-vertex signatures.
Guanghui Zhou, Julian Y. Günther, Zeren Simon Wang, Jordy de Vries, Herbi K. Dreiner   +4 more
doaj   +1 more source