http://journals.andromedapublisher.com/index.php/LHEP/issue/feed Letters in High Energy Physics 2022-06-19T00:58:24+00:00 Professor Shaaban Khalil khalil@andromedapublisher.com Open Journal Systems http://journals.andromedapublisher.com/index.php/LHEP/article/view/244 Using Embedding Theorems to Account for the Extreme Properties of Traversable Wormholes 2022-06-19T00:58:24+00:00 Peter K.F. Kuhfittig kuhfitti@msoe.edu <p>Embedding theorems, which have a long history in the general theory of relativity, are used in this paper to<br>account for two of the more troubling aspects of Morris-Thorne wormholes, (1) the origin of exotic matter<br>and the amount needed to sustain a wormhole, and (2) the enormous radial tension that is characteristic of<br>wormholes with moderately-sized throats. Attributing the latter to exotic matter ignores the fact that exotic<br>matter was introduced for a completely different reason and is usually present in only small quantities.</p> 2022-02-11T20:49:49+00:00 ##submission.copyrightStatement## http://journals.andromedapublisher.com/index.php/LHEP/article/view/270 Higgs Portal Vector Dark Matter Interpretation: Review of Effective Field Theory Approach and Ultraviolet Complete Models 2022-04-19T20:13:35+00:00 Mohamed Zaazoua za3zou3mohamed@gmail.com Loan Truong ngamrong@gmail.com Kétévi Adikle Assamagan ketevi@bnl.gov Farida Fassi farida.fassi@um5.ac.ma <p>A review of the Higgs portal-vector dark matter interpretation of the spin-independent dark-matter nucleon<br>elastic scattering cross section is presented, where the invisible Higgs decay width measured at the<br>LHC is used. Effective Field Theory and ultraviolet complete models are discussed. LHC interpretations<br>show only the scalar and Majorana dark-matter scenarios; we propose to include interpretation for vector<br>dark matter in the EFT and UV completions theoretical framework. In addition, our studies suggest an<br>extension of the LHC dark matter interpretations to the sub-GeV regime.</p> 2022-04-18T21:16:43+00:00 ##submission.copyrightStatement## http://journals.andromedapublisher.com/index.php/LHEP/article/view/293 A Recipe for Conformal Blocks 2022-06-12T20:47:27+00:00 Witold Skiba witold.skiba@yale.edu Jean-Francois Fortin Jean-Francois.Fortin@phy.ulaval.ca <p>We describe a prescription for constructing conformal blocks in conformal field theories in any space-time dimension with arbitrary quantum numbers. Our procedure reduces the calculation of conformal blocks to constructing certain group theoretic structures that depend on the quantum numbers of primary operators. These structures project into irreducible Lorentz representations. Once the Lorentz quantum numbers are accounted for there are no further calculations left to do. We compute a multivariable generalization of the Exton function. This generalized Exton function, together with the group theoretic structures, can be used to construct conformal blocks for four-point as well as higher-point correlation functions.</p> 2022-06-12T05:09:04+00:00 ##submission.copyrightStatement##