Quartic coupling on the Calabi-Yau manifold and the number of light lepton generations

1990 ◽  
Vol 243 (3) ◽  
pp. 227-230
Author(s):  
M.A. Mojumder
Keyword(s):  
Quartic Coupling

scholarly journals ANEC in λϕ4 theory

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Teresa Bautista ◽  
Lorenzo Casarin ◽  
Hadi Godazgar
Keyword(s):  
Critical Points ◽  
Energy Condition ◽  
Null Energy Condition ◽  
Renormalisation Group ◽  
Quartic Coupling ◽  
Third Order ◽  
Expectation Value ◽  
Scalar State

Abstract Motivated by the goal of applying the average null energy condition (ANEC) to renormalisation group flows, we calculate in λϕ4 theory the expectation value of the ANEC operator in a particular scalar state perturbatively up to third order in the quartic coupling and verify the expected CFT answer. The work provides the technical tools for studying the expectation value of the ANEC operator in more interesting states, for example tensorial states relevant to the Hofman-Maldacena collider bounds, away from critical points.

scholarly journals Weak cosmic censorship with self-interacting scalar and bound on charge to mass ratio

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Yan Song ◽  
Tong-Tong Hu ◽  
Yong-Qiang Wang
Keyword(s):  
Scalar Field ◽  
Scalar Fields ◽  
Cosmic Censorship ◽  
Mass Ratio ◽  
Quartic Coupling ◽  
Scalar Theory ◽  
Free Scalar ◽  
The One ◽  
Nonzero Scalar ◽  
Large Charge

Abstract We study the model of four-dimensional Einstein-Maxwell-Λ theory minimally coupled to a massive charged self-interacting scalar field, parameterized by the quartic and hexic couplings, labelled by λ and β, respectively. In the absence of scalar field, there is a class of counterexamples to cosmic censorship. Moreover, we investigate the full nonlinear solution with nonzero scalar field included, and argue that these counterexamples can be removed by assuming charged self-interacting scalar field with sufficiently large charge not lower than a certain bound. In particular, this bound on charge required to preserve cosmic censorship is no longer precisely the weak gravity bound for the free scalar theory. For the quartic coupling, for λ < 0 the bound is below the one for the free scalar fields, whereas for λ > 0 it is above. Meanwhile, for the hexic coupling the bound is always above the one for the free scalar fields, irrespective of the sign of β.

scholarly journals Scrutinizing the Higgs quartic coupling at a future 100 TeV proton–proton collider with taus and b-jets

2017 ◽  
Vol 771 ◽  
pp. 354-358 ◽  
Author(s):  
Benjamin Fuks ◽  
Jeong Han Kim ◽  
Seung J. Lee
Keyword(s):  
Quartic Coupling ◽  
Proton Proton

scholarly journals Quartic coupling unification in the maximally symmetric 2HDM

2019 ◽  
Vol 99 (11) ◽  
Author(s):  
Neda Darvishi ◽  
Apostolos Pilaftsis
Keyword(s):  
Quartic Coupling

Quartic coupling and its effect on wetting behaviors in nematic liquid crystals

2015 ◽  
Vol 24 (2) ◽  
pp. 026101
Author(s):  
Ming-Ying Zeng ◽  
Merlitz Holger ◽  
Chen-Xu Wu
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Quartic Coupling ◽  
Wetting Behaviors

scholarly journals MUON ANOMALY AND A LOWER BOUND ON HIGGS MASS DUE TO A LIGHT STABILIZED RADION IN THE RANDALL–SUNDRUM MODEL

2006 ◽  
Vol 21 (26) ◽  
pp. 5205-5220 ◽  
Author(s):  
PRASANTA KUMAR DAS
Keyword(s):  
Lower Bound ◽  
Extra Dimension ◽  
Higgs Mass ◽  
Vacuum Expectation ◽  
Vacuum Expectation Value ◽  
Quartic Coupling ◽  
Muon Anomalous Magnetic Moment ◽  
Expectation Value ◽  
The Standard Model ◽  
Standard Model Result

We investigate the Randall–Sundrum model with a light stabilized radion (required to fix the size of the extra dimension) in the light of muon anomalous magnetic moment [Formula: see text]. Using the recent data (obtained from the E821 experiment of the BNL Collaboration) which differs by 2.6σ from the Standard Model result, we obtain constraints on radion mass mϕ and radion vacuum expectation value 〈ϕ〉. In the presence of a radion the beta functions β(λ) and β(gt) of Higgs quartic coupling (λ) and top-Yukawa coupling (gt) gets modified. We find these modified beta functions. Using these beta functions together with the anomaly constrained mϕ and 〈ϕ〉, we obtain lower bound on Higgs mass mh. We compare our result with the present LEP2 bound on mh.

scholarly journals CLOSED STRING TACHYONS ON C/ZN

2004 ◽  
Vol 19 (32) ◽  
pp. 5625-5638 ◽  
Author(s):  
S. SARKAR ◽  
B. SATHIAPALAN
Keyword(s):  
Point Interaction ◽  
Closed String ◽  
Effective Field ◽  
Quartic Coupling ◽  
Interaction Terms ◽  
Large N ◽  
Quartic Term ◽  
Quartic Interaction ◽  
Interaction Term ◽  
Closed String Tachyons

We analyze the condensation of closed string tachyons on the C/ZN orbifold. We construct the potential for the tachyons up to the quartic interaction term in the large N limit. In this limit there are near marginal tachyons. The quartic coupling for these tachyons is calculated by subtracting from the string theory amplitude for the tachyons, the contributions from the massless exchanges, computed from the effective field theory. We argue that higher point interaction terms are also of the same order in 1/N as the quartic term and are necessary for existence of the minimum of the tachyon potential that is consistent with earlier analysis.

Sign in / Sign up

Export Citation Format

Share Document