scholarly journals Lagrangian approach to the physical degree of freedom count

2014 ◽  
Vol 55 (12) ◽  
pp. 122901 ◽  
Author(s):  
Bogar Díaz ◽  
Daniel Higuita ◽  
Merced Montesinos
Keyword(s):  
Lagrangian Approach ◽  
Degree Of Freedom ◽  
Physical Degree

STRONG CP PROBLEM AND AN AXIAL U(1) GAUGE SYMMETRY

1993 ◽  
Vol 08 (32) ◽  
pp. 3049-3056
Author(s):  
PONG YOUL PAC ◽  
CHERL SOO PAHK
Keyword(s):  
Scalar Field ◽  
Gauge Symmetry ◽  
Standard Model ◽  
Degree Of Freedom ◽  
New Approach ◽  
The Standard Model ◽  
Massless Quark ◽  
Exact Term ◽  
Physical Degree

We extend the standard model by an axial U(1) gauge symmetry obtained from a rotation parametrized by a scalar field. In quantizing the system, the Peccei-Quinn symmetry is realized by introducing a BRST-exact term, which can provide a new approach to the strong CP problem without assuming a physical degree of freedom like the axion or the massless quark. We can find that the transition between different topological sectors of QCD via physical scattering processes is suppressed.

scholarly journals Modified Anyonic Particle and Its Fundamental Gauge Symmetries

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Mehdi Dehghani ◽  
Salman Abarghouei Nejad ◽  
Majid Monemzadeh
Keyword(s):  
Poisson Structure ◽  
Degrees Of Freedom ◽  
Quantum Spin ◽  
Constrained Systems ◽  
Degree Of Freedom ◽  
Particle Model ◽  
Fundamental Symmetries ◽  
Gauge Symmetries ◽  
Physical Degree

In this article, we study the possibility of changing a physical degree of freedom of a particle to its quantum spin after quantization is applied. Our approach to do such a survey is increasing the fundamental symmetries of the anyonic particle model with the help of the symplectic formalism of constrained systems. After extracting the corresponding Poisson structure of all constraints, we compare the effect of gauging on the phase spaces, the number of physical degrees of freedom, canonical structures of both primary and gauged models, and the spin of the anyon, in terms of its energy.

scholarly journals Is there the radion in the RS2 model?

Open Physics ◽  
2004 ◽  
Vol 2 (1) ◽  
Author(s):  
Mikhail Smolyakov ◽  
Igor Volobuev
Keyword(s):  
Boundary Conditions ◽  
Degree Of Freedom ◽  
Gauge Functions ◽  
Physical Boundary ◽  
Conditions At Infinity ◽  
Metric Fluctuations ◽  
Physical Degree

AbstractWe analyse the physical boundary conditions at infinity for metric fluctuations and gauge functions in the RS2 model with matter on the brane. We argue that due to these boundary conditions the radion field cannot be gauged out in this case. Thus, it represents a physical degree of freedom of the model.

A Method to Investigate Vibrations in Tendon Driven Mechanisms

2003 ◽  
Author(s):  
F. Londi ◽  
P. P. Valentini ◽  
L. Vita
Keyword(s):  
Mechanical Model ◽  
Lagrangian Approach ◽  
Degree Of Freedom ◽  
Serial Manipulators ◽  
Hooke’S Law ◽  
Vibrational Behavior ◽  
Numerical Example ◽  
Hooke's Law ◽  
Three Degree Of Freedom

In this paper the authors develop a mechanical model to analyze the vibrational behavior of tendon driven mechanisms. The description of kinematics makes use of the correspondence between graphs and mechanisms, based on the works of L.W. Tsai and J.J. Lee [1–4], and on Denavithartenberg approach to study serial manipulators [5,6]. The equations of dynamics for a generic n-link manipulator have been deduced by Londi [8] by means of a Lagrangian approach in case of rigid belts. These equations have been modified to take into account belt elasticity, according to the Hooke’s law. The correct value of belt tension is computed using the λ-corrector algorithm developed by the authors [9]. A numerical example concerning a three degree-of-freedom manipulator is also presented.

SELF-DUALITY AND N=2 STRING MAGIC

1990 ◽  
Vol 05 (18) ◽  
pp. 1389-1398 ◽  
Author(s):  
HIROSI OOGURI ◽  
CUMRUN VAFA
Keyword(s):  
String Theory ◽  
Critical Dimension ◽  
Degree Of Freedom ◽  
Superconformal Symmetry ◽  
Four Dimensions ◽  
Yang Mills ◽  
Self Duality ◽  
Complex Dimensions ◽  
Physical Degree

We consider strings with an N=2 local superconformal symmetry on the worldsheet. The critical dimension for this theory is four (two complex dimensions) with the signature (2, 2). A Kähler function giving rise to self-dual gravity is the only physical degree of freedom of this theory. Some miraculous symmetries are observed corresponding to the exchange of worldsheet and target moduli. The open and heterotic versions of this string theory correspond to self-dual Yang-Mills fields coupled to self-dual gravity in four dimensions.

Approximating power for significance tests with one degree of freedom.

1997 ◽  
Vol 2 (2) ◽  
pp. 186-191 ◽  
Author(s):  
William P. Dunlap ◽  
Leann Myers
Keyword(s):  
Degree Of Freedom ◽  
Significance Tests
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