Quantum initial conditions for curved inflating universes

Autor: Letey, Mary I., Shumaylov, Zakhar, Agocs, Fruzsina J., Handley, Will J., Hobson, Michael P., Lasenby, Anthony N.

Publikováno v: Phys. Rev. D 109, 123502 (2024)

We discuss the challenges of motivating, constructing, and quantizing a canonically normalized inflationary perturbation in spatially curved universes. We show that this has historically proved challenging due to the interaction of nonadiabaticity wi

Externí odkaz: http://arxiv.org/abs/2211.17248

Bayesian evidence for the tensor-to-scalar ratio $r$ and neutrino masses $m_\nu$: Effects of uniform vs logarithmic priors

Autor: Hergt, Lukas T., Handley, Will J., Hobson, Michael P., Lasenby, Anthony N.

Publikováno v: Phys. Rev. D 103, 123511 (2021)

We review the effect that the choice of a uniform or logarithmic prior has on the Bayesian evidence and hence on Bayesian model comparisons when data provide only a one-sided bound on a parameter. We investigate two particular examples: the tensor-to

Externí odkaz: http://arxiv.org/abs/2102.11511

The HANDE-QMC project: open-source stochastic quantum chemistry from the ground state up

Autor: Spencer, James S., Blunt, Nick S., Choi, Seonghoon, Etrych, Jiri, Filip, Maria-Andreea, Foulkes, W. M. C., Franklin, Ruth S. T., Handley, Will J., Malone, Fionn D., Neufeld, Verena A., Di Remigio, Roberto, Rogers, Thomas W., Scott, Charles J. C., Shepherd, James J., Vigor, William A., Weston, Joseph, Xu, RuQing, Thom, Alex J. W.

Building on the success of Quantum Monte Carlo techniques such as diffusion Monte Carlo, alternative stochastic approaches to solve electronic structure problems have emerged over the last decade. The full configuration interaction quantum Monte Carl

Externí odkaz: http://arxiv.org/abs/1811.11679

Dynamical dark energy in light of the latest observations

Autor: Zhao, Gong-Bo, Raveri, Marco, Pogosian, Levon, Wang, Yuting, Crittenden, Robert G., Handley, Will J., Percival, Will J., Beutler, Florian, Brinkmann, Jonathan, Chuang, Chia-Hsun, Cuesta, Antonio J., Eisenstein, Daniel J., Kitaura, Francisco-Shu, Koyama, Kazuya, L'Huillier, Benjamin, Nichol, Robert C., Pieri, Matthew M., Rodriguez-Torres, Sergio, Ross, Ashley J., Rossi, Graziano, Sánchez, Ariel G., Shafieloo, Arman, Tinker, Jeremy L., Tojeiro, Rita, Vazquez, Jose A., Zhang, Hanyu

Publikováno v: Nature Astronomy, 1, 627-632, (2017)

A flat Friedman-Roberson-Walker universe dominated by a cosmological constant ($\Lambda$) and cold dark matter (CDM) has been the working model preferred by cosmologists since the discovery of cosmic acceleration. However, tensions of various degrees

Externí odkaz: http://arxiv.org/abs/1701.08165

Strengthening the bound on the mass of the lightest neutrino with terrestrial and cosmological experiments

Autor: Stöcker, Patrick, Balázs, Csaba, Bloor, Sanjay, Bringmann, Torsten, Gonzalo, Tomás E., Handley, Will J., Hotinli, Selim, Howlett, Cullan, Kahlhoefer, Felix, Renk, Janina J., Scott, Pat, Vincent, Aaron C., White, M.

Publikováno v: Stöcker, Patrick Balázs, Csaba Bloor, Sanjay Bringmann, Torsten Gonzalo, Tomás E. Handley, Will J. Hotinli, Selim Howlett, Cullan Kahlhoefer, Felix Renk, Janina J. Scott, Pat Vincent, Aaron C. White, M. . Strengthening the bound on the mass of the lightest neutrino with terrestrial and cosmological experiments. Physical Review D. 2021, 103(12), 123508-1-123508-9
Physical Review D

Externí odkaz: http://hdl.handle.net/10852/93409
https://www.duo.uio.no/bitstream/handle/10852/93409/1/PhysRevD.103.123508.pdf