Results 81 to 90 of about 1,549,437 (171)

Massive Rocky Planets May Suppress Deep Melting

AGU Advances, Volume 7, Issue 4, August 2026.
Abstract Melting properties of silicates are critical to understanding the thermal evolution of rocky planetary interiors. In the deep mantles of massive rocky planets, post‐post‐spinel Mg2SiO4 ${\text{Mg}}_{2}{\text{SiO}}_{4}$ is potentially one of the most abundant mineral phases, yet its melting behavior remains unconstrained. Here, we determine the
Donghao Zheng, Yihang Peng, Jie Deng
wiley   +1 more source

The emergence of spacetime, or, quantum gravity on your desktop [PDF]

, 2008
Is there an approach to quantum gravity which is conceptually simple, relies on very few fundamental physical principles and ingredients, emphasizes geometric (as opposed to algebraic) properties, comes with a definite numerical approximation scheme, and
Dep Natuurkunde, Quantum Gravity, Strings and Elementary Particles, Loll, R.   +2 more
core  

Insights into the catalytic mechanism of formate dehydrogenases from different microbial sources

The FEBS Journal, Volume 293, Issue 15, Page 4645-4659, August 2026.
This integrated study combines experimental enzyme kinetics with QM/MM simulations to map the catalytic mechanisms of four formate dehydrogenases at the atomic level. This approach reveals the key determinants of catalytic efficiency and guides the rational design of biocatalysts for effective CO2 reduction—a crucial step towards sustainable ...
Laura Legnani, Marco Gargiulo, Elia Lio, Enrico Mario Alessandro Fassi, Giovanni Grazioso, Maria Assunta Chiacchio, Barış Binay, Stefania Brocca, Francesco Secundo   +8 more
wiley   +1 more source

Proposal for solving the ‘‘problem of time’’ in canonical quantum gravity [PDF]

Physical Review D, 1993
15 ...
openaire   +3 more sources

A new class of group field theories for 1st order discrete quantum gravity [PDF]

, 2008
Group Field Theories, a generalization of matrix models for 2d gravity, represent a 2nd quantization of both loop quantum gravity and simplicial quantum gravity.
Afd Theoretical Physics (ITF), Oriti, D., Tlas, T., Quantum Gravity, Strings and Elementary Particles   +3 more
core  

Relational dynamics and Page-Wootters formalism in group field theory [PDF]

Quantum
Group field theory posits that spacetime is emergent and is hence defined without any background notion of space or time; dynamical questions are formulated in relational terms, in particular using (scalar) matter degrees of freedom as time.
Andrea Calcinari, Steffen Gielen
doaj   +1 more source

The Genesis of Canonical Quantum Gravity

, 2018
ReferencesFootnotes
Blum, A., Salisbury, D.
openaire   +3 more sources

Semiclassical interpretation of the topological solutions for canonical quantum gravity [PDF]

Physical Review D, 1996
30 pages Latex (one figure available as a postscript file)
openaire   +3 more sources

Gravity and Gauge [PDF]

, 2012
Philosophers of physics and physicists have long been intrigued by the analogies and disanalogies between gravitational theories and (Yang-Mills-type) gauge theories.
Teh, Nicholas
core  

Continuum canonical purifications

Journal of High Energy Physics
We construct and characterize canonical purifications for general algebraic states, extending prior constructions by Woronowicz and by Dutta/Faulkner to general quantum field theories. Given a quantum state on a *-algebra, the canonical purification is a
Jonathan Sorce
doaj   +1 more source