Tootfinder

Mit dem neuen #Solarthermiepark Au setzt #Tübingen ein starkes Zeichen für die #Wärmewende.
Auf 23.200 Quadratmetern erzeugt die Anlage jährlich rund 6 Millionen kWh

Sonne ab sofort Partnerin der Tübinger Wärmewende: Stadtwerke weihen Solarthermie-Park Au ein
Drittgrößte Anlage Deutschlands auf 23.000 Quadratmetern | Die Stadtwerke Tübingen (swt) haben jetzt eine der denkbar energiegeladensten Partnerinnen an ihrer Seite: Die Sonne. Sie sorgt ab sofort jährlich für sechs Millionen Kilowattstunden klimafreundliche Fernwärme. Die erzeugte Wärme kann viele Haushalte versorgen, die an das Fernwärmenetz angeschlossen sind. Die erste Solarthermie-Freiflächenanlage der swt ist gleichzeitig ein wichtiger Baustein für die Fernwärmetransformat…

Google has teased 60-second AI videos from Veo, which sounds impressive until you realize that requires not 10x, but 100x the energy of a 6-second clip.
Analysis confirming quadratic scaling of AI video footprint: https://www.linkedin.com/posts/jonipp…

1987 war zumindest eine Zeit mit besonderen Designs. Hier der Titel einer schulpolitischen Broschüre der baden-württembergischen Grünen aus dieser Zeit.

An elementary derivation of 3-cycles for a quadratic map
Arpad Benyi, Ioan Casu
https://arxiv.org/abs/2510.12558 https://arxiv.org/pdf/2510.12558

An elementary derivation of 3-cycles for a quadratic map
We present an elementary derivation of the period-three cycles for the real quadratic map $x\mapsto x^2+c$, a fundamental model in one-dimensional discrete dynamics. Using symmetric polynomials, we obtain a complete algebraic characterization of 3-cycles and determine explicit conditions for their existence and stability, without reliance on computer algebra. Through conjugacy with the logistic map, we recover the classical threshold values of the logistic parameter corresponding to the emergen…

Implementing the Quantum Approximate Optimization Algorithms for QUBO problems Across Quantum Hardware Platforms: Performance Analysis, Challenges, and Strategies
Teemu Pihkakoski, Aravind Plathanam Babu, Pauli Taipale, Petri Liimatta, Matti Silveri
https://arxiv.org/abs/2510.12336

Implementing the Quantum Approximate Optimization Algorithms for QUBO problems Across Quantum Hardware Platforms: Performance Analysis, Challenges, and Strategies
Quantum computers are expected to offer significant advantages in solving complex optimization problems that are challenging for classical computers. Quadratic Unconstrained Binary Optimization (QUBO) problems represent an important class of problems with relevance in finance and logistics. The Quantum Approximate Optimization Algorithm (QAOA) is a prominent candidate for solving QUBO problems on near-term quantum devices. In this paper, we investigate the performance of both the standard QAOA …

Bloch Oscillations and Landau-Zener Transitions in Flat-Band Lattices with Quadratic and Linear Band Touchings
Chenhaoyue Wang, Carlos J. Garcia-Cervera, Amartya S. Banerjee
https://arxiv.org/abs/2510.03530

Bloch Oscillations and Landau-Zener Transitions in Flat-Band Lattices with Quadratic and Linear Band Touchings
Bloch oscillations (BOs) describe the coherent oscillatory motion of electrons in a periodic lattice under a constant external electric field. Deviations from pure harmonic wave packet motion or irregular Bloch oscillations can occur due to Zener tunneling (Landau-Zener Transitions or LZTs), with oscillation frequencies closely tied to interband coupling strengths. Motivated by the interplay between flat-band physics and interband coupling in generating irregular BOs, here we investigate these …

Erst vor wenigen Wochen wurde hier mit großem Aufwand eine der neuen touristischen Infostelen der Stadt Dresden aufgestellt. Nun ist diese plötzlich wieder weg. Die Frage ist warum? Stand die etwa Holgers Riesenrad im weg, welches hier demnächt aufgestellt wird? Wenn ja: Zahlt Holger den Auf- & Abbau?

On the Speed-up of Wave-like Dark Matter Searches with Entangled Qubits
Arushi Bodas, Sohitri Ghosh, Roni Harnik
https://arxiv.org/abs/2510.11795 https://a…

On the Speed-up of Wave-like Dark Matter Searches with Entangled Qubits
Qubit-based sensing platforms offer promising new directions for wave-like dark matter searches. Recent proposals demonstrate that entangled qubits can achieve quadratic scaling of the signal in the number of qubits. In this work we expand on these proposals to analyze the bandwidth and scan rate performance of entangled qubit protocols across different error regimes. We find that the phase-based readout of entangled protocols preserves the search bandwidth independent of qubit number, in contr…

Overlapping Schwarz Scheme for Linear-Quadratic Programs in Continuous Time
Hongli Zhao, Mihai Anitescu, Sen Na
https://arxiv.org/abs/2510.04478 https://ar…

Overlapping Schwarz Scheme for Linear-Quadratic Programs in Continuous Time
We present an optimize-then-discretize framework for solving linear-quadratic optimal control problems (OCP) governed by time-inhomogeneous ordinary differential equations (ODEs). Our method employs a modified overlapping Schwarz decomposition based on the Pontryagin Minimum Principle, partitioning the temporal domain into overlapping intervals and independently solving Hamiltonian systems in continuous time. We demonstrate that the convergence is ensured by appropriately updating the boundary …

Progressive Bound Strengthening via Doubly Nonnegative Cutting Planes for Nonconvex Quadratic Programs
Zheng Qu, Defeng Sun, Jintao Xu
https://arxiv.org/abs/2510.02948 https://

Progressive Bound Strengthening via Doubly Nonnegative Cutting Planes for Nonconvex Quadratic Programs
We introduce a cutting-plane framework for nonconvex quadratic programs (QPs) that progressively tightens convex relaxations. Our approach leverages the doubly nonnegative (DNN) relaxation to compute strong lower bounds and generate separating cuts, which are iteratively added to improve the relaxation. We establish that, at any Karush-Kuhn-Tucker (KKT) point satisfying a second-order sufficient condition, a valid cut can be obtained by solving a linear semidefinite program (SDP), and we devise…