2010/12/03 by Beatriz Gato-Rivera, B. Gato-Rivera, A.N. Schellekens +1
Mathematics · Physics and Astronomy · #Advanced Algebra and Geometry #Algebraic structures and combinatorial models #Black Holes and Theoretical Physics #Boson #Computer science #Conformal map #Epistemology #Fermion #Geometry #Heterotic string theory #Mathematics #Modular design #Order (exchange) #Particle physics #Philosophy #Physics #Programming language #Pure mathematics #Quantum mechanics #Simple (philosophy) #Spectral line #Theoretical physics #Yield (engineering) #hep-th
paper · pdf · doi:10.1016/j.nuclphysb.2011.02.004
published as Nucl.Phys.B847:532-548,2011 · 22 pages, 3 figures
arxiv created 2010/12/03 · openalex publication_date 2011/02/11 · arxiv updated 2011/03/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In the same spirit as heterotic weight lifting, B-L lifting is a way of replacing the superfluous and ubiquitous U(1)B-L with something else with the same modular properties, but different conformal weights and ground state dimensions. This method works in principle for all variants of (2,2) constructions, such as orbifolds, Calabi-Yau manifolds, free bosons and fermions and Gepner models, since it only modifies the universal SO(10) x E8 part of the CFT. However, it can only yield chiral spectra if the ``internal" sector of the theory provides a simple current of order 5. Here we apply this new method to Gepner models. Including exceptional invariants, 86 of them have the required order 5 simple current, and 69 of these yield chiral spectra. Three family spectra occur abundantly.