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Fluctuations in the New Inflationary Universe
The spectrum of density perturbations is calculated in the new-inflationary-universe scenario. The main source is the quantum fluctuations of the Higgs field, which lead to fluctuations in the time…
Chern-Simons modification of general relativity
General relativity is extended by promoting the three-dimensional gravitational Chern-Simons term to four dimensions. This entails choosing an embedding coordinate v_\mu -- an external quantity,…
Dimensionally reduced gravitational Chern-Simons term and its kink
- G. Guralnik, A. Iorio, R. Jackiw, S. Pi
- Physics
- 13 May 2003
Testing non-commutative QED, constructing non-commutative MHD
- Z. Guralnik, R. Jackiw, S. Pi, A. Polychronakos
- Physics
- 5 June 2001
Tensor analysis of hadronic jets in quantum chromodynamics
- J. Donoghue, F. Low, S. Pi
- Physics
- 1 December 1979
We define tensors in momentum space for the events produced in e/sup +/e/sup -/ annihilation. They are calculable in quantum-chromodynamics (QCD) perturbation theory and therefore can be used as a…
Tutorial on Scale and Conformal Symmetries in Diverse Dimensions
We review the relation between scale and conformal symmetries in various models and dimensions. We present a dimensional reduction from relativistic to non-relativistic conformal dynamics.
Conformal blocks for the four-point function in conformal quantum mechanics
Extending previous work on 2 -- and 3 -- point functions, we study the 4 -- point function and its conformal block structure in conformal quantum mechanics CFT$_1$, which realizes the SO(2,1)…
Processes Involving Fragmentation Functions Beyond the Leading Order in QCD
- G. Altarelli, R. Ellis, G. Martinelli, S. Pi
- Physics
- 3 December 1979
Perfect fluid theory and its extensions
- R. Jackiw, V. Nair, S. Pi, A. Polychronakos
- Mathematics
- 8 July 2004
We review the canonical theory for perfect fluids in Euler's and Lagrange's formulations. The theory is related to a description of extended structures in higher dimensions. Internal symmetry and…
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