scholarly journals BF gravity with Immirzi parameter and matter fields

2012 ◽  
Vol 85 (6) ◽  
Author(s):  
Merced Montesinos ◽  
Mercedes Velázquez
Keyword(s):  
Matter Fields

Shape Dynamics and the Linking Theory

2018 ◽  
Author(s):  
Flavio Mercati
Keyword(s):  
Phase Space ◽  
Degrees Of Freedom ◽  
Line Element ◽  
Hamiltonian Formulation ◽  
Operational Definition ◽  
Extended Phase Space ◽  
Extended Phase ◽  
Problem Of Time ◽  
Definition Of ◽  
Matter Fields

This chapter explains in detail the current Hamiltonian formulation of SD, and the concept of Linking Theory of which (GR) and SD are two complementary gauge-fixings. The physical degrees of freedom of SD are identified, the simple way in which it solves the problem of time and the problem of observables in quantum gravity are explained, and the solution to the problem of constructing a spacetime slab from a solution of SD (and the related definition of physical rods and clocks) is described. Furthermore, the canonical way of coupling matter to SD is introduced, together with the operational definition of four-dimensional line element as an effective background for matter fields. The chapter concludes with two ‘structural’ results obtained in the attempt of finding a construction principle for SD: the concept of ‘symmetry doubling’, related to the BRST formulation of the theory, and the idea of ‘conformogeometrodynamics regained’, that is, to derive the theory as the unique one in the extended phase space of GR that realizes the symmetry doubling idea.

scholarly journals Hierarchical structure of physical Yukawa couplings from matter field Kähler metric

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Keiya Ishiguro ◽  
Tatsuo Kobayashi ◽  
Hajime Otsuka
Keyword(s):  
String Theory ◽  
Hierarchical Structure ◽  
Matter Field ◽  
Heterotic String ◽  
Heterotic String Theory ◽  
Kähler Metric ◽  
Yukawa Couplings ◽  
String Compactifications ◽  
Kahler Metric ◽  
Matter Fields

Abstract We study the impacts of matter field Kähler metric on physical Yukawa couplings in string compactifications. Since the Kähler metric is non-trivial in general, the kinetic mixing of matter fields opens a new avenue for realizing a hierarchical structure of physical Yukawa couplings, even when holomorphic Yukawa couplings have the trivial structure. The hierarchical Yukawa couplings are demonstrated by couplings of pure untwisted modes on toroidal orbifolds and their resolutions in the context of heterotic string theory with standard embedding. Also, we study the hierarchical couplings among untwisted and twisted modes on resolved orbifolds.

scholarly journals Form factors and decoupling of matter fields in four-dimensional gravity

2019 ◽  
Vol 790 ◽  
pp. 229-236 ◽  
Author(s):  
Sebastián A. Franchino-Viñas ◽  
Tibério de Paula Netto ◽  
Ilya L. Shapiro ◽  
Omar Zanusso
Keyword(s):  
Form Factors ◽  
Dimensional Gravity ◽  
Matter Fields

scholarly journals Bulk matter fields on two-field thick branes

2011 ◽  
Vol 84 (4) ◽  
Author(s):  
Chun-E Fu ◽  
Yu-Xiao Liu ◽  
Heng Guo
Keyword(s):  
Matter Fields ◽  
Thick Branes

scholarly journals Exponent of n-Ising matter fields coupled to 2d gravity

1993 ◽  
Vol 305 (4) ◽  
pp. 327-331 ◽  
Author(s):  
Shinobu Hikami
Keyword(s):  
2D Gravity ◽  
Matter Fields

THE PAULI TERM AS A GENERATOR OF FRACTIONAL SPIN

2011 ◽  
Vol 26 (19) ◽  
pp. 1427-1432
Author(s):  
J. S. N. FURTADO ◽  
F. A. S. NOBRE
Keyword(s):  
Fractional Statistics ◽  
Fractional Spin ◽  
Chern Simons ◽  
Matter Fields

In this work, we show that contrary to what is commonly accepted by the community, the Chern–Simons term is not essential to fractional statistics. A Lagrangian whose dynamics is governed only by the Pauli term coupled to matter fields leads to the fractional spin. Despite its simplicity, development of this Lagrangian gives rise to essentially the same terms that appear in Chern–Simons models, such as those reported by Nobre and Almeida.13,8,9

scholarly journals Matter fields in the Lagrangian loop representation: scalar QED

1996 ◽  
Vol 366 (1-4) ◽  
pp. 416-420 ◽  
Author(s):  
J.M. Aroca ◽  
M. Baig ◽  
H. Fort ◽  
R. Siri
Keyword(s):  
Matter Fields

LOCALIZATION OF MATTERS ON A NON-Z2-SYMMETRIC THICK BRANE

2010 ◽  
Vol 25 (07) ◽  
pp. 511-523
Author(s):  
JUN LIANG ◽  
YI-SHI DUAN
Keyword(s):  
Vector Field ◽  
Scalar Field ◽  
Yukawa Coupling ◽  
Spinor Field ◽  
Zero Mode ◽  
Parallel Transport ◽  
Type Coupling ◽  
Matter Fields

We study localization of various matter fields on a non-Z2-symmetric scalar thick brane in a pure geometric Weyl integrable manifold in which variations in the length of vectors during parallel transport are allowed and a geometric scalar field is involved in its formulation. It is shown that, for spin 0 scalar field, the massless zero mode can be normalized on the brane. Spin 1 vector field cannot be normalized on the brane. And there is no spinor field which can be trapped on the brane for the case of no Yukawa-type coupling. By introducing the appropriate Yukawa coupling, the left or right chiral fermionic zero mode can be localized on the brane.

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