Zobrazeno 1 - 10
of 738
pro vyhledávání: '"P, Sullivan James"'
With an aim towards modeling cosmologies beyond the $\Lambda$CDM paradigm, we demonstrate the automatic construction of recombination history emulators while enforcing a prior of causal dynamics. These methods are particularly useful in the current e
Externí odkaz:
http://arxiv.org/abs/2411.15140
Autor:
Sullivan, James M., Chen, Shi-Fan
Local primordial non-Gaussianity (LPNG) couples long-wavelength cosmological fluctuations to the short-wavelength behavior of galaxies. This coupling is encoded in bias parameters including $b_{\phi}$ and $b_{\delta\phi}$ at linear and quadratic orde
Externí odkaz:
http://arxiv.org/abs/2410.18039
Autor:
Boyle, Gregory, Garland, Nathan, McEachran, Bob, Mirihana, Kalpani, Robson, Rob, Sullivan, James, White, Ron
The theory for electron transport in simple liquids developed by Cohen and Lekner is extended to simple liquid mixtures. The focus is on developing benchmark models for binary mixtures of hard-spheres, using the Percus-Yevick model to represent the d
Externí odkaz:
http://arxiv.org/abs/2310.06426
Autor:
Sullivan, James M., Seljak, Uros
We introduce a global, gradient-free surrogate optimization strategy for expensive black-box functions inspired by the Fokker-Planck and Langevin equations. These can be written as an optimization problem where the objective is the target function to
Externí odkaz:
http://arxiv.org/abs/2310.00745
Autor:
Nicola, Andrina, Hadzhiyska, Boryana, Findlay, Nathan, García-García, Carlos, Alonso, David, Slosar, Anže, Guo, Zhiyuan, Kokron, Nickolas, Angulo, Raúl, Aviles, Alejandro, Blazek, Jonathan, Dunkley, Jo, Jain, Bhuvnesh, Pellejero, Marcos, Sullivan, James, Walter, Christopher W., Zennaro, Matteo
Upcoming imaging surveys will allow for high signal-to-noise measurements of galaxy clustering at small scales. In this work, we present the results of the LSST bias challenge, the goal of which is to compare the performance of different nonlinear ga
Externí odkaz:
http://arxiv.org/abs/2307.03226
Autor:
Pattnaik, Nandita, Nurse, Jason R. C., Turner, Sarah, Mott, Gareth, MacColl, Jamie, Huesch, Pia, Sullivan, James
As cyber-attacks continue to increase in frequency and sophistication, organisations must be better prepared to face the reality of an incident. Any organisational plan that intends to be successful at managing security risks must clearly understand
Externí odkaz:
http://arxiv.org/abs/2307.02855
Publikováno v:
JCAP Volume 2023, Issue 08, id.004, 33 pp
Local primordial non-Gaussianity (LPNG) is predicted by many non-minimal models of inflation, and creates a scale-dependent contribution to the power spectrum of large-scale structure (LSS) tracers, whose amplitude is characterized by $b_{\phi}$. Kno
Externí odkaz:
http://arxiv.org/abs/2303.08901
Publikováno v:
JCAP Volume 2023, Issue 06, id.003, 34 pp
Neutrino mass constraints are a primary focus of current and future large-scale structure (LSS) surveys. Non-linear LSS models rely heavily on cosmological simulations -- the impact of massive neutrinos should therefore be included in these simulatio
Externí odkaz:
http://arxiv.org/abs/2302.09134
Publikováno v:
The 18th International Conference on Mobility, Sensing and Networking (MSN 2022)
Person re-identification is a critical privacy breach in publicly shared healthcare data. We investigate the possibility of a new type of privacy threat on publicly shared privacy insensitive large scale wearable sensing data. In this paper, we inves
Externí odkaz:
http://arxiv.org/abs/2211.02622
Publikováno v:
JCAP Volume 2021, Issue 11, id.026, 47 pp
We update Halo Zeldovich Perturbation Theory (HZPT), an analytic model for the two-point statistics of dark matter, to describe halo and galaxy clustering, and galaxy-matter cross-correlation on nonlinear scales. The model correcting Zeldovich has an
Externí odkaz:
http://arxiv.org/abs/2104.10676