HIRES, the high-resolution spectrograph for the ELT

Kavli Affiliate: Martin Haehnelt | First 5 Authors: Alessandro Marconi, Manuel Abreu, Vardan Adibekyan, Matteo Aliverti, Carlos Allende Prieto | Summary: HIRES will be the high-resolution spectrograph of the European Extremely Large Telescope at optical and near-infrared wavelengths. It consists of three fibre-fed spectrographs providing a wavelength coverage of 0.4-1.8 mic (goal 0.35-1.8 mic) at […]


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The axiomatic and the operational approaches to resource theories of magic do not coincide

Kavli Affiliate: David Gross | First 5 Authors: Arne Heimendahl, Markus Heinrich, David Gross, , | Summary: Stabiliser operations occupy a prominent role in fault-tolerant quantum computing. They are defined operationally: by the use of Clifford gates, Pauli measurements and classical control. These operations can be efficiently simulated on a classical computer, a result which […]


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Unraveling the origin of magnetic fields in galaxies

Kavli Affiliate: Debora Sijacki | First 5 Authors: Sergio Martin-Alvarez, Harley Katz, Debora Sijacki, Julien Devriendt, Adrianne Slyz | Summary: Despite their ubiquity, there are many open questions regarding galactic and cosmic magnetic fields. Specifically, current observational constraints cannot rule out if magnetic fields observed in galaxies were generated in the Early Universe or are […]


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The Magellan-TESS Survey I: Survey Description and Mid-Survey Results

Kavli Affiliate: George Ricker | First 5 Authors: Johanna Teske, Sharon Xuesong Wang, Angie Wolfgang, Tianjun Gan, Mykhaylo Plotnykov | Summary: $Kepler$ revealed that roughly one-third of Sun-like stars host planets orbiting within 100 days and between the size of Earth and Neptune. How do these planets form, what are they made of, and do […]


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Sunspot simulations: penumbra formation and the fluting instability

Kavli Affiliate: Robert Cameron | First 5 Authors: Mayukh Panja, Robert Cameron, Sami K. Solanki, , | Summary: The fluting instability has been suggested as the driver of the subsurface structure of sunspot flux tubes. We conducted a series of numerical experiments where we used flux tubes with different initial curvatures to study the effect […]


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Valley Bosonic Stimulation of Exciton-Polaritons in a Monolayer Semiconductor

Kavli Affiliate: Xiang Zhang | First 5 Authors: Pasquale Cilibrizzi, Xiaoze Liu, Peiyao Zhang, Chenzhe Wang, Quanwei Li | Summary: The newly discovered valley degree of freedom in atomically thin two-dimensional transition metal dichalcogenides offers a promising platform to explore rich nonlinear physics, such as spinor Bose-Einstein condensate (BEC) and novel valleytronics applications. However, the […]


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Flavor Triangle of the Diffuse Supernova Neutrino Background

Kavli Affiliate: Shunsaku Horiuchi | First 5 Authors: Zahra Tabrizi, Shunsaku Horiuchi, , , | Summary: Although Galactic core-collapse supernovae (SNe) only happen a few times per century, every hour a vast number of explosions happen in the whole universe, emitting energy in the form of neutrinos, resulting in the diffuse supernova neutrino background (DSNB). […]


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On the Convergence of Reinforcement Learning in Nonlinear Continuous State Space Problems

Kavli Affiliate: Ran Wang | First 5 Authors: Raman Goyal, Suman Chakravorty, Ran Wang, Mohamed Naveed Gul Mohamed, | Summary: We consider the problem of Reinforcement Learning for nonlinear stochastic dynamical systems. We show that in the RL setting, there is an inherent “Curse of Variance" in addition to Bellman’s infamous “Curse of Dimensionality", in […]


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Data Processing Pipeline For Tianlai Experiment

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: Shifan Zuo, Jixia Li, Yichao Li, Das Santanu, Albert Stebbins | Summary: The Tianlai project is a 21cm intensity mapping experiment aimed at detecting dark energy by measuring the baryon acoustic oscillation (BAO) features in the large scale structure power spectrum. This experiment provides an opportunity […]


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Interstellar and Circumgalactic Properties of an Unseen $z=6.84$ Galaxy: Abundances, Ionization, and Heating in the Earliest Known Quasar Absorber

Kavli Affiliate: Gabor Furesz | First 5 Authors: Robert A. Simcoe, Masafusa Onoue, Anna-Christina Eilers, Eduardo Banados, Thomas J. Cooper | Summary: We analyze relative abundances and ionization conditions in a strong absorption system at z=6.84, seen in the spectrum of the z=7.54 background quasar ULAS J134208.10+092838.61. Singly ionized C, Si, Fe, Mg, and Al […]


Continue.. Interstellar and Circumgalactic Properties of an Unseen $z=6.84$ Galaxy: Abundances, Ionization, and Heating in the Earliest Known Quasar Absorber