Výsledky vyhledávání - "Doeser, Ludvig"

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COmoving Computer Acceleration (COCA): $N$-body simulations in an emulated frame of reference

Autor: Bartlett, Deaglan J., Chiarenza, Marco, Doeser, Ludvig, Leclercq, Florent

$N$-body simulations are computationally expensive, so machine-learning (ML)-based emulation techniques have emerged as a way to increase their speed. Although fast, surrogate models have limited trustworthiness due to potentially substantial emulati

Externí odkaz: http://arxiv.org/abs/2409.02154

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Bayesian Inference of Initial Conditions from Non-Linear Cosmic Structures using Field-Level Emulators

Autor: Doeser, Ludvig, Jamieson, Drew, Stopyra, Stephen, Lavaux, Guilhem, Leclercq, Florent, Jasche, Jens

Publikováno v: Monthly Notices of the Royal Astronomical Society, Volume 535, Issue 2, December 2024, Pages 1258-1277

Analysing next-generation cosmological data requires balancing accurate modeling of non-linear gravitational structure formation and computational demands. We propose a solution by introducing a machine learning-based field-level emulator, within the

Externí odkaz: http://arxiv.org/abs/2312.09271

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Användning av maskininlärning för att förstå kosmisk expansion

Autor: Doeser, Ludvig

This thesis aims at using novel machine learning techniques to test the dynamics of the Universe via the cosmological redshift-distance test. Currently, one of the most outstanding questions in cosmology is the physical cause of the accelerating cosm

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::3efc0d0e9033664010ea5dc0f445910d
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-297644

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Coupling of Light Into a Silicon-on-Silica Strip Waveguide

Autor: Rydving, Erik, Doeser, Ludvig

Den senaste teknologiska utvecklingen har gjort det möjligt att miniatyrisera optiska komponenter ner på ett fotoniskt integrerat kretskort. Sammankopplingen mellan olika komponenter möjliggörs av vågledare, i vilka informationsbäraren, en ensk

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::d9bc6610969ba677f3ecc01f28b00134
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-254771

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