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- Publications
- Influence

Superspace dynamics and perturbations around 'emptiness'

Superspace parametrized by gauge potentials instead of metric three-geometries is discussed in the context of the Ashtekar variables. Gauge-fixing conditions which lead to the natural geometrical… Expand

Short distance versus long distance physics: The classical limit of the minimal length uncertainty relation

- S. Benczik, L. Chang, D. Minic, N. Okamura, Saifuddin Rayyan, T. Takeuchi
- Physics
- 4 April 2002

We continue our investigation of the phenomenological implications of the ``deformed'' commutation relations… Expand

On the invisible decays of the ϒ and J/Ψ resonances

- L. Chang, O. Lebedev, J. Ng
- Physics
- 25 June 1998

We estimate the most important corrections to the branching ratios for the invisible decays of quarkonium states, arising from possible extensions of the Standard Model. Among the possibilities… Expand

Gravitation as a gauge theory

- F. Mansouri, L. Chang
- Physics
- 15 June 1976

We present gauge theories of gravitation based, respectively, on the general linear group GL(n, R) and its inhomogeneous extension IGL(n, R). (SO(n-1,1) and ISO(n-1,1) for torsion-free manifolds).… Expand

On the Minimal Length Uncertainty Relation and the Foundations of String Theory

- L. Chang, Zachary Lewis, D. Minic, T. Takeuchi
- Physics
- 1 June 2011

We review our work on the minimal length uncertainty relation as suggested by perturbative string theory. We discuss simple phenomenological implications of the minimal length uncertainty relation… Expand

Exact solution of the harmonic oscillator in arbitrary dimensions with minimal length uncertainty relations

- L. Chang, D. Minic, N. Okamura, T. Takeuchi
- Physics
- 21 November 2001

We determine the energy eigenvalues and eigenfunctions of the harmonic oscillator where the coordinates and momenta are assumed to obey the modified commutation relations… Expand

Effect of the minimal length uncertainty relation on the density of states and the cosmological constant problem

- L. Chang, D. Minic, N. Okamura, T. Takeuchi
- Physics
- 4 January 2002

We investigate the effect of the minimal length uncertainty relation, motivated by perturbative string theory, on the density of states in momentum space. The relation is implemented through the… Expand

Structure of the Vacuum and Neutron and Neutrino Oscillations

In a theory where the fermion numbers B and L are not conserved, the true ground state is a condensate of fermion pairs and antifermion pairs. Because of this, the usual analysis of fermion… Expand

Dynamics underlying duality and gauge invariance in the dual resonance models

- L. Chang, F. Mansouri
- Physics
- 1972

Nonlinear Gauge Fields and the Structure of Gravity and Supergravity Theories

- L. Chang, F. Mansouri
- Physics
- 15 June 1978

By regarding the gauge fields which arise in theories based on nonlinear realizations of gauge symmetries as dynamical variables, we show that gravity, with or without matter, supergravity, and… Expand