TDCOSMO. XXIII. Measurement of the Hubble constant from the doubly lensed quasar HE1104-1805

Posted by klaurent Chicago

Kavli Affiliate: Elizabeth Buckley-Geer | Summary:Time-delay cosmography leverages strongly lensed quasars to measure the Universe’s current expansion rate, H_0, independently from other methods. While the latest TDCOSMO results relied mainly on quadruply lensed quasars, doubly lensed systems are far more common and offer precise time delays, potentially enlarging the usable sample by a factor of […]


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TDCOSMO. XXIV. Measurement of the Hubble constant from the doubly lensed quasar HE1104-1805

Posted by klaurent Chicago

Kavli Affiliate: Elizabeth Buckley-Geer | Summary:Time-delay cosmography leverages strongly lensed quasars to measure the Universe’s current expansion rate, H_0, independently from other methods. While the latest TDCOSMO results relied mainly on quadruply lensed quasars, doubly lensed systems are far more common and offer precise time delays, potentially enlarging the usable sample by a factor of […]


Continue.. TDCOSMO. XXIV. Measurement of the Hubble constant from the doubly lensed quasar HE1104-1805

Dynamical Non-Commutative Algebraic Geometry: Inflation, Bifurcation, and the Dynamics of Collapse across Division Algebras

Posted by klaurent Peking

Kavli Affiliate: Pau Amaro Seoane | Summary:We develop a framework for dynamical non-commutative algebraic geometry (DNCAG) by analyzing the evolution and stability of polynomial root manifolds in real normed division algebras ($mathbbH$ and $mathbbO$). We establish a Generalized Inflation Theorem, demonstrating that for central polynomials, the root set forms a homogeneous space $G/H$, where $G$ […]


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A Wind-Driven Origin for the Firework Morphology of the Supernova Remnant Pa 30

Posted by klaurent MIT

Kavli Affiliate: Dheeraj Pasham | Summary:Pa 30 — the likely remnant of the Galactic type Iax supernova of 1181 AD — displays an unusual, firework-like morphology, consisting of radial filaments extending from a common center, where a white dwarf (WD) currently drives a very fast wind (speed $gtrsim 10^4$ km s$^-1$). We propose the filaments […]


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The DREAMS Project: Disentangling the Impact of Halo-to-Halo Variance and Baryonic Feedback on Milky Way Dark Matter Density Profiles

Posted by klaurent MIT

Kavli Affiliate: Lina Necib | Summary:In this work, we utilize a new suite of Milky Way-mass halos from the DREAMS Project, simulated with Cold Dark Matter (CDM), to quantify the influence of baryon feedback and intrinsic halo-to-halo variance on dark matter density profiles. Our suite of 1024 halos varies over supernova and black hole feedback […]


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The DREAMS Project: Disentangling the Impact of Halo-to-Halo Variance and Baryonic Feedback on Milky Way Dark Matter Density Profiles

Posted by klaurent MIT

Kavli Affiliate: Lina Necib | Summary:Astrophysical searches for dark matter in the Milky Way require a reliable model for its density distribution, which in turn depends on the influence of baryonic feedback on the Galaxy. In this work, we utilize a new suite of Milky Way-mass halos from the DREAMS Project, simulated with Cold Dark […]


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A Thermal Relic Encyclopedia: Dark Matter Candidates Coupled to Quarks

Posted by klaurent Chicago

Kavli Affiliate: Gordan Krnjaic | Summary:Thermal freeze-out is a compelling framework for naturally generating the dark matter abundance. We systematically study a broad range of dark matter and mediator particle combinations that can viably realize thermal freeze-out, focusing on models in which the mediator couples to Standard Model quarks. In each case, we calculate the […]


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A new constraint on the $y$-distortion with FIRAS: implications for feedback models in galaxy formation and cosmic shear measurements

Posted by klaurent Tokyo

Kavli Affiliate: David Spergel | Summary:The $y$-type distortion of the blackbody spectrum of the cosmic microwave background radiation probes the pressure of the gas trapped in galaxy groups and clusters. We reanalyze archival data of the FIRAS instrument with an improved astrophysical foreground cleaning technique, and measure a mean $y$-distortion of $langle yrangle = (1.2pm […]


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Information dynamics and symmetry breaking in generic monitored $mathbbZ_2$-symmetric open quantum systems

Posted by klaurent UCSB

Kavli Affiliate: Matthew Fisher | Summary:We investigate the steady-state phases of generic $mathbbZ_2$-symmetric monitored, open quantum dynamics. We describe the phases systematically in terms of both information-theoretic diagnostics and spontaneous breaking of strong and weak symmetries of the dynamics. We find a completely broken phase where information is retained by the quantum system, a strong-to-weak […]


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Equilibrium SAT based PQC: New aegis against quantum computing

Posted by klaurent Stanford

Kavli Affiliate: Hsiao-Mei (Sherry) Cho| First 5 Authors: [#item_custom_name[1, [#item_custom_name[2, [#item_custom_name[3, [#item_custom_name[4, [#item_custom_name[5| Summary:Public-key cryptography algorithms have evolved towards increasing computational complexity to hide desired messages, which is accelerating with the development of the Internet and quantum computing. This paper introduces a novel public-key cryptography algorithm that generates ciphertexts by counting the number of elements […]


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