conformally

The most ingenious cosmological model proposed in recent years is perhaps Roger Penrose's conformally cyclic cosmology.

Archive 2009-05-01 Gordon McCabe 2009

The cycle of Penrose's model is one in which the universe 'begins' in a conformally invariant state, with zero Weyl curvature, but in which there is a normal derivative to the Weyl curvature.

Archive 2009-05-01 Gordon McCabe 2009

The fact that the universe is very small and hot at the beginning, and very large and cold in the far future, is not a problem, argues Penrose, because both the early universe and far future universe contain only conformally invariant, massless particles.

Archive 2009-05-01 Gordon McCabe 2009

We can just as well chose another field conformally scaled otherwise.

Dark Matter: Still Dark. Julianne 2008

Geraint, your papers refer frequently to superluminal recession velocities, which you say are inevitable and open ended at large distances in both the FLRW and conformally Minkowski metrics.

Does Space Expand? Sean 2008

I am pretty familiar with the characteristics of different coordinate systems such as FLRW, conformally flat Minkowski, Milne, etc.

Does Space Expand? Sean 2008

Again due to limitations the Rindler wedge of spacetime on an accelerated from is a Poincare half plane, which is conformally mapped to the Poincare disk.

A Dark, Misleading Force Sean 2007

Please tell me if I recall correctly that linear dilaton backgrounds are conformally flat spacetimes, with a special choice of dilaton field linearly related to the time coordinate?

Guest Post: Joe Polchinski on Science or Sociology? Sean 2007

A large "mothership," closely resembling the U.S. Air Force's historic XB-70 supersonic bomber, carries the orbital component conformally under its fuselage, accelerating to supersonic speeds at high altitude before dropping the spaceplane.

NASA Watch: Keith Cowing: March 2006 Archives 2006

If we demand that the worldsheet field theory is conformally invariant (scale invariant), then the so-called beta functions must vanish (this is necessary for us to gauge-fix the metric to the conformal gauge).

Two cheers for string theory Sean 2005