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Rotating Carroll Black Holes: A No Go Theorem
Ivan Kol\'a\v{r}, David Kubiznak, Poula Tadros
https://arxiv.org/abs/2506.10451 https://

Rotating Carroll Black Holes: A No Go Theorem
Recently, there has been a lot of interest in Carroll black holes and in particular whether or not one could find a Carrollian analogue of a rotating black hole spacetime. Here we show that every stationary and axisymmetric solution (and thence also a black hole) of Carrollian general relativity in any number of $d\geq 3$ dimensions is necessarily also static. Using this result, we construct a unique stationary and axisymmetric black hole in three dimensions - a static Carroll BTZ black hole. A…

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Diese Teilchen sind kleiner als 1 Mikrometer und schwer messbar, doch sie könnten mehr

Nanoplastic concentrations across the North Atlantic - Nature
Observations from 12 hydrocast stations along a transect crossing the North Atlantic from the subtropical gyre to the northern European shelf provide evidence of large amounts of nanoplastics throughout the entire water column.

Kardar--Parisi--Zhang universality in optically induced lattices of exciton--polariton condensates
D. Novokreschenov, V. Neplokh, M. Misko, N. Starkova, T. Cookson, A. Kudlis, A. Nalitov, I. A. Shelykh, A. V. Kavokin, P. Lagoudakis
https://arxiv.org/abs/2506.10187

Kardar--Parisi--Zhang universality in optically induced lattices of exciton--polariton condensates
We investigate space-time coherence in one-dimensional lattices of exciton-polariton condensates formed by fully reconfigurable non-resonant optical pumping. Starting from an open-dissipative Gross-Pitaevskii equation with deterministic reservoir kinetics and stochastic condensate noise, we derive a discrete complex-field model that incorporates coherent tunnelling, reservoir-mediated dissipative coupling and gain-saturation non-linearity. Adiabatic elimination of fast density fluctuations reve…

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- 2025
Live at the BBC Proms: the BBC Scottish Symphony Orchestra, conductor Delyana Lazarova and cellist Anastasia Kobekina perform music by Rachmaninov, Shostakovich and Lili Boulanger.
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https://www.bbc.co.uk/programmes/m002hxkf

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Terrafamen kaivos täyttää tänä syksynä 10 vuotta. Vuosien liiketulos ei anna aihetta juhlaan: se on katastrofaalisen huono – 200 miljoonaa miinuksella.

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