Tootfinder

Fidelity of entanglement and quantum entropies: unveiling their relationship in quantum states and channels
Komal Kumar, Bivas Mallick, Tapaswini Patro, Nirman Ganguly
https://arxiv.org/abs/2506.11506

Fidelity of entanglement and quantum entropies: unveiling their relationship in quantum states and channels
Entanglement serves as a fundamental resource for various quantum information processing tasks. Fidelity of entanglement (which measures the proximity to a maximally entangled state) and various quantum entropies are key indicators for certifying entanglement in a quantum state. Quantum states with high fidelity are particularly useful for numerous information-theoretic applications. Similarly, states possessing negative conditional entropy provide significant advantages in several quantum info…

"Bangladesh aims to revive five critically endangered plants"
#Bangladesh #Plants #Environment

Bangladesh aims to revive five critically endangered plants
For the first time in its history, Bangladesh is attempting to protect five species from extinction by increasing their numbers and strengthening their population in the wild. The floral species are bulborox (Bulbophyllum roxburghii), the small-bulb orchid Bulbophyllum oblongum, dwarf date palm (Phoenix acaulis), chaulmoogra (Hydnocarpus kurzii) and bash pata (Podocarpus neriifolius). All of them are […]

Feeling Machines: Ethics, Culture, and the Rise of Emotional AI
Vivek Chavan, Arsen Cenaj, Shuyuan Shen, Ariane Bar, Srishti Binwani, Tommaso Del Becaro, Marius Funk, Lynn Greschner, Roberto Hung, Stina Klein, Romina Kleiner, Stefanie Krause, Sylwia Olbrych, Vishvapalsinhji Parmar, Jaleh Sarafraz, Daria Soroko, Daksitha Withanage Don, Chang Zhou, Hoang Thuy Duong Vu, Parastoo Semnani, Daniel Weinhardt, Elisabeth Andre, J\"org Kr\"uger, Xavier Fresquet

Feeling Machines: Ethics, Culture, and the Rise of Emotional AI
This paper explores the growing presence of emotionally responsive artificial intelligence through a critical and interdisciplinary lens. Bringing together the voices of early-career researchers from multiple fields, it explores how AI systems that simulate or interpret human emotions are reshaping our interactions in areas such as education, healthcare, mental health, caregiving, and digital life. The analysis is structured around four central themes: the ethical implications of emotional AI, …

Exploring Entanglement Entropy for a Particle on a Torus with constant Metric and constant $U(1)$-Gauge Field
Helmuth Huffel, Gerald Kelnhofer
https://arxiv.org/abs/2506.11292

Exploring Entanglement Entropy for a Particle on a Torus with constant Metric and constant $U(1)$-Gauge Field
In this paper, we focus on the entanglement entropy associated with a particle confined to a torus with constant metric and $θ$-terms related to a constant external $U(1)$-gauge field. Through this investigation, we aim to elucidate the interplay between geometric properties, topological terms, and entanglement entropy. Remarkably, we find that the presence of non-vanishing entanglement entropy is closely tied to fixing the metric. This insight highlights the significant influence of quantum e…

Studying Maximal Entanglement and Bell Nonlocality at an Electron-Ion Collider
Wei Qi, Zijing Guo, Bo-Wen Xiao
https://arxiv.org/abs/2506.12889 https://

Studying Maximal Entanglement and Bell Nonlocality at an Electron-Ion Collider
In this paper, we propose to test quantum entanglement and Bell nonlocality at an Electron-Ion Collider (EIC). By computing the spin correlations in quark-antiquark pairs produced via photon-gluon fusion, we find that longitudinally polarized photons produce maximal entanglement at leading order, while transversely polarized photons generate significant entanglement near the threshold and in the ultra-relativistic regime. Compared to hadron colliders, the EIC provides a cleaner experimental env…

Manifestation of quantum entanglement between harmonic oscillators in de Sitter
Sumanta Chakraborty, Anupam Mazumdar, Ritapriya Pradhan
https://arxiv.org/abs/2506.11422

Manifestation of quantum entanglement between harmonic oscillators in de Sitter
Two harmonic oscillators interacting through the exchange of a quantum field leads to non-zero entanglement between the two, which is absent for classical interaction. In this work, we determine the entanglement between two such harmonic oscillators living in an expanding universe. It turns out that, if the oscillators are within the Hubble horizon, with their frequencies are comparable to the rate of expansion of the universe, the entanglement is non-zero and significant. While, for oscillator…

Temporal Dynamics of Emotions in Italian Online Soccer Fandoms
Salvatore Citraro, Giovanni Mauro, Emanuele Ferragina
https://arxiv.org/abs/2506.11934 https…

Temporal Dynamics of Emotions in Italian Online Soccer Fandoms
This study investigates the emotional dynamics of Italian soccer fandoms through computational analysis of user-generated content from official Instagram accounts of 83 teams across Serie A, Serie B, and Lega Pro during the 2023-24 season. By applying sentiment analysis to fan comments, we extract temporal emotional patterns and identify distinct clusters of fan bases with similar preseason expectations. Drawing from complex systems theory, we characterize joy as displaying anti-bursty temporal…

Quantum Entanglement with Geometric Measures
Xuanran Zhu
https://arxiv.org/abs/2506.11453 https://arxiv.org/pdf/2506.11453

Quantum Entanglement with Geometric Measures
Quantifying quantum entanglement is a pivotal challenge in quantum information science, particularly for high-dimensional systems, due to its computational complexity. This thesis extends the geometric measure of entanglement (GME) to introduce and investigate a suite of GME-based entanglement monotones tailored for diverse quantum contexts, including pure states, subspaces, and mixed states. These monotones are applicable to both bipartite and multipartite systems, offering a unified framework…

Entangled states from quantum algebra $\mathcal{U}_h (\mathfrak{sl}(2, \mathbb{R}))$
A. Ballesteros, J. J. Relancio, L. Santamar\'ia-Sanz
https://arxiv.org/abs/2506.11686

Entangled states from quantum algebra $\mathcal{U}_h (\mathfrak{sl}(2, \mathbb{R}))$
We discuss the application of the Jordanian quantum algebra $\mathcal{U}_h (\mathfrak{sl}(2, \mathbb{R}))$, as a Hopf algebra deformation of the Lie algebra $\mathfrak{sl}(2, \mathbb{R})$, in the context of entanglement properties of quantum states. For them, several kind of entanglement measures and fidelities are obtained, parametrized by the deformation parameter $h$. In particular, we construct the associated $h$-deformed Dicke states on $\mathfrak{sl}(2, \mathbb{R})$, comparing them to the…

Witnessing PPT entanglement via rank analysis of (sub)matrices
Aabhas Gulati
https://arxiv.org/abs/2506.11346 https://arxiv.org/pdf/2…

Witnessing PPT entanglement via rank analysis of (sub)matrices
We develop a new method for entanglement detection in bipartite quantum states, using the violation of the rank-1 generated property of matrices. The positive-semidefinite matrices form a convex cone that has extremal elements of only rank-1. But convex conic subsets resulting from presence of linear constraints allow extremal elements of rank > 1. The problem of deciding when a matrix is rank-1 generated, i.e a sum of rank-1 PSD matrices, has been studied extensively in optimization theory. Th…