1,009,485 research outputs found
On the Running of the Cosmological Constant in Quantum General Relativity
We present arguments that show what the running of the cosmological constant
means when quantum general relativity is formulated following the prescription
developed by Feynman.Comment: 5 page
IR-Improved DGLAP-CS QCD Parton Showers in Pythia8
We introduce the recently developed IR-improved DGLAP-CS theory into the
showers in Pythia8, as this Monte Carlo event generator is in wide use at LHC.
We show that, just as it was true in the IR-improved shower Monte Carlo
Herwiri, which realizes the IR-improved DGLAP-CS theory in the Herwig6.5
environment, the soft limit in processes such as single heavy gauge boson
production is now more physical in the IR-improved DGLAP-CS theory version of
Pythia8. This opens the way to one's getting a comparison between the actual
detector simulations for some of the LHC experiments between IR-improved and
unimproved showers as Pythia8 is used in detector simulations at LHC whereas
Herwig6.5, the environment of the only other IR-improved DGLAP-CS QCD MC in the
literature, Herwiri1.031, is not any longer so used. Our achieving the
availability of the IR-improved DGLAP-CS Pythia8 then is an important step in
the further development of the LHC precision theory program under development
by the author and his collaborators.Comment: 6 pages, 1 figur
Massive Elementary Particles and Black Holes in Resummed Quantum Gravity
We use exact results in a new approach to quantum gravity to show that the
classical conclusion that a massive elementary point particle is a black hole
is obviated by quantum loop effects. Further phenomenological implications are
discussed.Comment: 4 pages, 1 figure; presented at ICHEP0
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