Tootfinder

Correction to: The Double-Wedge Algebra for Quantum Fields on Schwarzschild and Minkowski Spacetimes
Bernard S. Kay (York)
https://arxiv.org/abs/2506.15731

Correction to: The Double-Wedge Algebra for Quantum Fields on Schwarzschild and Minkowski Spacetimes
There is an error in the proof (but not the truth) of Theorem 3.2 in the author's 1985 paper "The Double-Wedge Algebra for Quantum Fields on Schwarzschild and Minkowski Spacetimes" in "Communications in Mathematical Physics". The author became aware of that error and of how it may be corrected soon after it went to print, and two companion papers published soon afterwards (in Helvetica Physica Acta) refer to an "erratum to appear". This is that erratum. We also take the opportunity to note a fe…

At its Discover 2025 conference, HPE unveiled HPE CloudOps Software, GreenLake Intelligence, which can deploy AI agents across its hybrid cloud stack, and more (Larry Dignan/Constellation Research)
https://www.constellationr.com/…

HPE launches GreenLake Intelligence, adds AI agents throughout hybrid cloud stack
HPE launched new CloudOps Software, layered AI agents throughout its hybrid cloud stack, unveiled GreenLake Intelligence and expanded its AI factory. In addition, Digital Realty said it would standardize its data center footprint on HPE. At its flagship Discover 2025 conference, HPE showcased its new branding as well as play for AI workloads. The big picture from HPE is that hybrid IT operations, networking, storage and AI operations can be largely turnkey via AI agents.

🇺🇦 Auf radioeins läuft...
Double Trouble feat. Rebel MC:
🎵 Street Tuff
#NowPlaying #DoubleTrouble #RebelMC
https://parralox.bandcamp.com/track/double-trouble-and-rebel-mc-street-tuff-parralox-remix-v2
https://open.spotify.com/track/0xuPdurmO3oHjUSz0iUeei

Photoproduction of doubly charmed tetraquark $T_{cc}$ via photon-gluon fusion at ILC and CLIC
Juan-Juan Niu, Hong-Hao Ma
https://arxiv.org/abs/2506.16721 h…

Photoproduction of doubly charmed tetraquark $T_{cc}$ via photon-gluon fusion at ILC and CLIC
The photoproduction of doubly charmed tetraquark $T_{cc}$ is predicted through the resolved channel $γ+g\to \to \langle cc \rangle[n] + \bar{c}+\bar{c} \to T_{cc}+\bar{c}+\bar{c}$ at ILC and CLIC. At $e^{+}e^{-}$ colliders, the initial photons $γ$ can be produced from two primary sources, well-delineated within the $Weiz\ddot{a}cker$ Williams approximation (WWA) and the laser back-scattering (LBS). And the initial gluon can be emitted from the photon. The spin and color quantum number $[n]$ o…

Transport properties of the pseudospin-3/2 Dirac-Weyl fermions in the double-barrier-modulated two-dimensional system
Rui Zhu
https://arxiv.org/abs/2506.18253

Transport properties of the pseudospin-3/2 Dirac-Weyl fermions in the double-barrier-modulated two-dimensional system
In this work, we analytically solved the pseudospin-3/2 Dirac equation and investigated the electronic transport properties in the double-barrier modulated two-dimensional system. The probability current density operator is explicitly derived from the time-dependent pseudospin-3/2 Dirac equation, which paves way for investigation of the electronic transport properties of general pseudospin-$s$ Dirac-Weyl systems with $s$ an integer or half integer larger than 1. As a result of the double-cone b…

Double-hybrid density-functional theory with density-based basis-set correction
Aurore Zna\"ida (LCT), Julien Toulouse (LCT)
https://arxiv.org/abs/2506.18612

Double-hybrid density-functional theory with density-based basis-set correction
We develop the theory justifying the application of the density-based basis-set correction (DBBSC) method to double-hybrid approximations in order to accelerate their basis convergence. We show that, for the oneparameter double hybrids based on the adiabatic connection, the exact dependence of the basis-set correction functional on the coupling-constant parameter $λ$ involves a uniform coordinate scaling by a factor 1/$λ$ of the density and of the basis functions. Neglecting this uniform coor…

The existence of quasi-periodic invariant tori and double Hopf bifurcation of van der Pol's oscillator with delayed feedback
Xuemei Li, Bochao Yu
https://arxiv.org/abs/2506.17097

The existence of quasi-periodic invariant tori and double Hopf bifurcation of van der Pol's oscillator with delayed feedback
The double Hopf bifurcation and the existence of quasi-periodic invariant tori in a delayed van der Pol's oscillator are considered by regarding the damped coefficient and the delay as bifurcation parameters. Applying the center manifold reduction and the normal form method, we derive the normal form near the critical point and analyse the existence of invariant 2-tori and 3-tori for the truncated normal form. Furthermore, the effect of higher-order terms on these invariant tori are investigate…

Salesforce launches Agentforce 3 with an observability tool called Command Center and MCP support, and says 8,000 customers have signed up to deploy Agentforce (Larry Dignan/Constellation Research)
https://www.constellationr.com/blog-news/i

Salesforce launches Agentforce 3, Command Center for visibility
Salesforce launched Agentforce 3, which features Agentforce Command Center, support for Model Context Protocol (MCP), and updated Atlas architecture to speed up reasoning and performance. The rollout maintains Salesforce's Agentforce cadence, which includes updates every few months as the company learns from enterprise use cases. In addition, Salesforce has added more than 30 partners to AgentExchange including AWS, Box, Cisco, Google Cloud, IBM and payments players such as PayPal and Stripe.

Researchers: "chain of thought" techniques used by Anthropic, Google, OpenAI, and xAI show inconsistencies where chatbot answers contradict the stated reasoning (Cristina Criddle/Financial Times)
https://www.ft.com/content/b349f590-de84-455d-914a-cc5d9eef…

The struggle to get inside how AI models really work
Anthropic, Google  and OpenAI deploy ‘chains of thought’ to better understand the operations of AI systems

Amazon launches its second batch of 27 Kuiper satellites to low Earth orbit via a ULA rocket, taking the total in orbit to 54 of its planned 3,236 constellation (Annie Palmer/CNBC)
https://www.cnbc.com/2025/06/23/amazon-kuiper-satellites-musk-starlink.h…

Amazon launches second batch of Kuiper internet satellites, taking on Elon Musk's Starlink
Amazon has sent more Kuiper craft into space as it looks to deploy a satellite constellation that rivals Starlink, a service operated by Elon Musk's SpaceX.