156 citations · 1.1k across the 34 of their papers we have counts for
36 papers
Dyson's Equations for Quantum Gravity in the Hartree-Fock Approximation
Herbert W. Hamber, Lu Heng Sunny Yu
Unlike scalar and gauge field theories in four dimensions, gravity is not perturbatively renormalizable and as a result perturbation theory is badly divergent. Often the method of…
Gravitational Fluctuations as an Alternative to Inflation III. Numerical Results
Herbert W. Hamber, Lu Heng Sunny Yu, Hasitha E. Pituwala Kankanamge
Power spectra play an important role in the theory of inflation, and their ability to reproduce current observational data to high accuracy is often considered a triumph of inflati…
Gravitational Fluctuations as an Alternative to Inflation II. CMB Angular Power Spectrum
Herbert W. Hamber, Lu Heng Sunny Yu
Power spectra always play an important role in the theory of inflation. In particular, the ability to reproduce the galaxy matter power spectrum and the CMB temperature angular pow…
Gravitational Fluctuations as an Alternative to Inflation
Herbert W. Hamber, Lu Heng Sunny Yu
The ability to reproduce the observed matter power spectrum to high accuracy is often considered as a triumph of inflation. In this work, we explore an alternative explanati…
Vacuum Condensate Picture of Quantum Gravity
Herbert W. Hamber
In quantum gravity perturbation theory in Newton's constant G is known to be badly divergent, and as a result not very useful. Nevertheless some of the most interesting phenomena i…
Scaling Exponents for Lattice Quantum Gravity in Four Dimensions
Herbert W. Hamber
In this work nonperturbative aspects of quantum gravity are investigated using the lattice formulation, and some new results are presented for critical exponents, amplitudes and in…