Results 31 to 40 of about 575,418 (334)

Backreaction during Inflation: A Physical Gauge Invariant Formulation [PDF]

Physical Review Letters, 2011
Within a genuinely gauge invariant approach recently developed for the computation of the cosmological backreaction, we study, in a cosmological inflationary context and with respect to various observers, the impact of scalar fluctuations on the space-time dynamics in the long wavelength limit.
Finelli, F., Marozzi, G., Vacca, G. P., Venturi, G.   +3 more
openaire   +4 more sources

CP violation in three-body B decays: a model ansatz

Journal of High Energy Physics, 2020
The mechanism of CP violation remains one of the puzzles in particle physics. Key to understanding this phenomenon are nonleptonic B decays, especially multibody decays which exhibit large CP asymmetries in various regions of phase space.
Thomas Mannel, Kevin Olschewsky, K. Keri Vos   +2 more
doaj   +1 more source

Unitarity Triangles and the Search for New Physics [PDF]

, 2002
Assuming that the Kobayashi-Maskawa mechanism gives the dominant contribution to CP violation at low energies, we propose a novel way of testing the flavour sector of the Standard Model which has the potencial for discovering New Physics.
Abbiendi, Abe, Aleksan, Ali, Anikeev, Aubert, Aubert, Ball, Barate, Barenboim, Barenboim, Barenboim, Bigi, Botella, Branco, Branco, Branco, Branco, Branco, Branco, Branco, Buras, Chang, Charles, Ciuchini, del Aguila, Del Aguila, Dighe, F.J. Botella, Falk, Fleischer, Fleischer, G.C. Branco, Gronau, Gronau, Gronau, Gronau, Gronau, Groom, Hawkins, Hocker, Hurth, Jaffe, Laplace, London, Lü, M. Nebot, M.N. Rebelo, Masiero, Mele, Nir, Nir, Silva, Silva, Tanaka, Yanir   +55 more
core   +2 more sources

Conformal invariance and $2D$ statistical physics [PDF]

Bulletin of the American Mathematical Society, 2008
Summary: A number of two-dimensional models in statistical physics are conjectured to have scaling limits at criticality that are in some sense conformally invariant. In the last ten years, the rigorous understanding of such limits has increased significantly.
openaire   +2 more sources

Testing Lorentz invariance violations in the tritium beta-decay anomaly [PDF]

, 2000
We consider a Lorentz non-invariant dispersion relation for the neutrino, which would produce unexpected effects with neutrinos of few eV, exactly where the tritium beta-decay anomaly is found.
Alfaro, Aloisio, Amelino-Camelia, Amelino-Camelia, Belesev, Coleman, Colladay, Colladay, Greisen, J.L Cortés, J.M Carmona, Lobashev, Mohapatra, Weinheimer, Zatsepin, Zatsepin   +15 more
core   +3 more sources

General coordinate invariance and conformal invariance in nonrelativistic physics: Unitary Fermi gas [PDF]

Annals of Physics, 2006
We show that the Lagrangian for interacting nonrelativistic particles can be coupled to an external gauge field and metric tensor in a way that exhibits a nonrelativistic version of general coordinate invariance. We explore the consequences of this invariance on the example of the degenerate Fermi gas at infinite scattering length, where conformal ...
Son, D. T., Wingate, M.
openaire   +2 more sources

Higgs boson pair production at NNLO in QCD including dimension 6 operators

Journal of High Energy Physics, 2017
In this paper we present the computation of the Higgs boson pair production cross section, both inclusive as well as differential on the invariant mass distribution, at next-to-next-to-leading order (NNLO) in QCD including effects of new physics beyond ...
Daniel de Florian, Ignacio Fabre, Javier Mazzitelli   +2 more
doaj   +1 more source

Higgs triplet extension of GRACE

European Physical Journal C: Particles and Fields, 2022
Much theoretical effort and automatization are required to confront new physics models with experimental data for many types of particle reactions at future colliders.
Yusaku Kouda, Tadashi Kon, Yoshimasa Kurihara, Takahiro Ueda   +3 more
doaj   +1 more source

Diffeomorphism Invariant Actions for Partial Systems

, 1994
Local action principles on a manifold $\M$ are invariant (if at all) only under diffeomorphisms that preserve the boundary of $\M$. Suppose, however, that we wish to study only part of a system described by such a principle; namely, the part that lies in
Atiyah, Banãdos, Carlip, Donald Marolf, Dowker, Garfinkle, Geroch, Gibbons, Halliwell, Hawking, Hawking, Henneaux, Horowitz, Kuchař, Teitelboim, Teitelboim   +15 more
core   +1 more source

Some new invariant solutions of nonlinear fifth order partial differential equation via Lie approach

Partial Differential Equations in Applied Mathematics
In this paper, the classical Lie symmetry analysis of (1+3) dimensional perturbed Zakharov–Kuznetsov (pZK) equation has been studied. We present a thorough classification of Lie point symmetries for pZK equation.
Muhammad Irshad, Muhammad Hussan, Aqsa Haider, H.M. Younas, Zulfiqar Ali, Iram Jahangir   +5 more
doaj   +1 more source