CERN Theory

2014-12-18
08:36
 Gauged R-symmetry and its anomalies in 4D N=1 supergravity and phenomenological implications / Antoniadis, I ; Ghilencea, D M ; Knoops, R We consider a class of models with gauged U(1)_R symmetry in 4D N=1 supergravity that have, at the classical level, a metastable ground state, an infinitesimally small (tunable) positive cosmological constant and a TeV gravitino mass. [...] arXiv:1412.4807 ; CERN-PH-TH-2014-242. - 2014. - 24 p. Preprint - Full text

2014-12-18
08:35
 Instantaneous stochastic perturbation theory / Lüscher, Martin (CERN ; Bern U.) A form of stochastic perturbation theory is described, where the representative stochastic fields are generated instantaneously rather than through a Markov process. [...] arXiv:1412.5311 ; CERN-PH-TH-2014-239. - 2014. - 25 p. Preprint - Full text

2014-12-18
08:28
 Phenomenology of theories of gravity without Lorentz invariance: the preferred frame case / Blas, Diego ; Lim, Eugene Theories of gravitation without Lorentz invariance are candidates of low-energy descriptions of quantum gravity [...] arXiv:1412.4828 ; CERN-PH-TH-2014-193. - 2014. - 38 p. Preprint - Full text

2014-12-12
08:09
 A Symbol of Uniqueness: The Cluster Bootstrap for the 3-Loop MHV Heptagon / Drummond, James M ; Papathanasiou, Georgios ; Spradlin, Marcus Seven-particle scattering amplitudes in planar super-Yang-Mills theory are believed to belong to a special class of generalised polylogarithm functions called heptagon functions. [...] arXiv:1412.3763 ; CERN-PH-TH-2014-256 ; LAPTH-232-14. - 2014. - 30 p. Preprint - Full text

2014-12-12
08:09
 Flavoured Dark Matter Beyond MFV / Blanke, Monika We review a model of quark flavoured dark matter with new flavour violating interactions. [...] arXiv:1412.3589 ; CERN-PH-TH-2014-257 ; TTP14-037. - 2014. Preprint - Full text

2014-12-12
08:08
 Hamiltonian Truncation Study of the Phi^4 Theory in Two Dimensions / Rychkov, Slava ; Vitale, Lorenzo G We defend the Fock-space Hamiltonian truncation method, which allows to calculate numerically the spectrum of strongly coupled quantum field theories, by putting them in a finite volume and imposing a UV cutoff. [...] arXiv:1412.3460 ; CERN-PH-TH-2014-254. - 2014. - 39 p. Preprint - Full text

2014-12-11
07:31
 The Quark Condensate in Multi-Flavour QCD - Planar Equivalence Confronting Lattice Simulations / Armoni, Adi (Swansea U.) ; Shifman, Mikhail (Minnesota U., Theor. Phys. Inst.) ; Shore, Graham (Swansea U.) ; Veneziano, Gabriele (CERN ; College de France) Planar equivalence between the large $N$ limits of ${\cal N}=1$ Super Yang-Mills (SYM) theory and a variant of QCD with fermions in the antisymmetric representation is a powerful tool to obtain analytic non-perturbative results in QCD itself. [...] arXiv:1412.3389 ; CERN-PH-TH-2014-255 ; FTPI-MINN-14-43 ; UMN-TH-3414-14. - 2014. - 13 p. Preprint - Full text

2014-12-11
07:31
 Generalized Born--Infeld Actions and Projective Cubic Curves / Ferrara, S (CERN ; Frascati) ; Porrati, M (New York U., CCPP) ; Sagnotti, A (CERN) ; Stora, R (CERN ; Annecy, LAPTH) ; Yeranyan, A (Frascati ; Enrico Fermi Ctr., Rome) We investigate $U(1)^{\,n}$ supersymmetric Born-Infeld Lagrangians with a second non-linearly realized supersymmetry. [...] arXiv:1412.3337 ; CERN-PH-TH-2014-250. - 2014. - 17 p. Preprint - Full text

2014-12-10
07:46
 Softened Gravity and the Extension of the Standard Model up to Infinite Energy / Giudice, Gian F (CERN) ; Isidori, Gino (Zurich U. ; Frascati) ; Salvio, Alberto (Madrid, Autonoma U. ; Madrid, IFT) ; Strumia, Alessandro (INFN, Pisa ; Pisa U. ; NICPB, Tallinn) Attempts to solve naturalness by having the weak scale as the only breaking of classical scale invariance have to deal with two severe difficulties: gravity and the absence of Landau poles. [...] arXiv:1412.2769 ; CERN-PH-TH-2014-247 ; IFT-UAM-CSIC-14-127 ; IFUP-TH-2014. - 2014. - 60 p. Preprint - Full text

2014-12-10
07:44
 The Beautiful Physics of LHC Run 2 / Ellis, John (King's Coll. London ; CERN) Run 2 of the LHC offers some beautiful prospects for new physics, including flavour physics as well as more detailed studies of the Higgs boson and searches for new physics beyond the Standard Model (BSM). [...] arXiv:1412.2666 ; KCL-PH-TH-2014-50 ; LCTS-2014-51 ; CERN-PH-TH-2014-248 KCL-PH-TH-2014-50 ; LCTS-2014-51 ; CERN-PH-TH-2014-248 KCL-PH-TH-2014-50 ; LCTS-2014-51 ; CERN-PH-TH-2014-248 KCL-PH-TH-2014-50 ; LCTS-2014-51 ; CERN-PH-TH-2014-248. - 2014. - 16 p. Preprint - Full text