Results 71 to 80 of about 79,565 (217)

Effective sound speed in relativistic accretion discs around rotating black holes

, 2019
For axially symmetric accretion maintained in the hydrostatic equilibrium along the vertical direction in the Kerr metric, the radial Mach number does not become unity at the critical point.
Das, Tapas Kumar, Maity, Susovan, Shaikh, Md Arif   +2 more
core  

Statistical Complexity of Quantum Learning

Advanced Quantum Technologies, EarlyView.
The statistical performance of quantum learning is investigated as a function of the number of training data N$N$, and of the number of copies available for each quantum state in the training and testing data sets, respectively S$S$ and V$V$. Indeed, the biggest difference in quantum learning comes from the destructive nature of quantum measurements ...
Leonardo Banchi, Jason Luke Pereira, Sharu Theresa Jose, Osvaldo Simeone   +3 more
wiley   +1 more source

Quantum‐Noise‐Driven Generative Diffusion Models

Advanced Quantum Technologies, EarlyView.
Diffusion Models (DMs) are today a very popular class of generative models for Machine Learning (ML), using a noisy dynamics to learn an unknown density probability of a finite set of samples in order to generate new synthetic data. This study proposes a method to generalize them into the quantum domain by introducing and investigating what are termed ...
Marco Parigi, Stefano Martina, Filippo Caruso   +2 more
wiley   +1 more source

Additive Manufacturing for Advanced Quantum Technologies

Advanced Quantum Technologies, EarlyView.
Additive manufacturing has disruptive potential to enable quantum technology to be widely used in real‐world applications. In this review, we summarize the most important AM techniques that enable practical advance and fascinating opportunities for quantum technologies.
F. Wang, N. Cooper, D. Johnson, B. Hopton, A. Murray, R. McMullen, T. M. Fromhold, R. Hague, L. Turyanska, L. Hackermüller   +9 more
wiley   +1 more source

Cuprate Twistronics for Quantum Hardware

Advanced Quantum Technologies, EarlyView.
This review bridges decades of foundational research with emerging fabrication techniques such as molecular beam epitaxy and cryogenic stacking. By enabling control over electronic correlations and symmetry in twisted cuprate heterostructures, it highlights how cuprate twistronics could open new paths to overcome decoherence and scalability challenges ...
Tommaso Confalone, Flavia Lo Sardo, Yejin Lee, Sanaz Shokri, Giuseppe Serpico, Alessandro Coppo, Luca Chirolli, Valerii M. Vinokur, Valentina Brosco, Uri Vool, Domenico Montemurro, Francesco Tafuri, Kornelius Nielsch, Golam Haider, Nicola Poccia   +14 more
wiley   +1 more source

Stark Effect Tunable Terahertz Transitions in Finite Carbon Chains

Small Structures, EarlyView.
Recent advances in the synthesis of linear carbon chains with alternating single and triple bonds have enabled the fabrication of ensembles of highly aligned gold‐cluster‐capped polyynes. These systems are theoretically predicted to emit tunable terahertz radiation when illuminated with visible light, with the emission frequency controlled by an ...
Raymond A. Ng, Alexey Kucherik, Mikhail E. Portnoi, Richard R. Hartmann   +3 more
wiley   +1 more source

Embedded Interactions and Selective Disclosure: Network Effects on Conversations aboard Skylab

Symbolic Interaction, EarlyView.
How do absent others influence our interactions? We argue in this paper that interactions are embedded within networks formed by chains of specific relationships between known third parties. The anticipation of future interactions with external others conditions our interpretation of the current situation and affects our behavior in the interaction. We
Michael Schultz, Leslie DeChurch, Noshir Contractor   +2 more
wiley   +1 more source

Heading west: ecology of swift foxes in a novel landscape beyond their range

Wildlife Biology, EarlyView.
The swift fox Vulpes velox is generally associated with the short‐grass prairie ecosystem of the North American Great Plains; a system that has declined by approximately 50% over the last century. Yet, swift fox populations seem to demonstrate regional variation in trends, with some populations declining while others appear stable to increasing.
Austin B. Smith, Ashley G. Wolf, Kelsie R. Buxbaum, Leah H. Yandow, Christopher C. Keefe, Heather L. O'Brien, Neal C. Swayze, Joseph D. Holbrook   +7 more
wiley   +1 more source

New opportunities for grassland species in warming temperate winters

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Temperate winters are getting warmer, the length of the growing season is increasing and mid‐winter fluctuations of warm and freezing temperatures are more frequent. Although typically winter dormant, some herbaceous perennials can maintain or grow green leaves during ...
F. Curtis Lubbe, Andrea Kučerová, Martin Bitomský, Jitka Klimešová   +3 more
wiley   +1 more source

Carbon pathways and trophic attributes are conserved in carnivorous reef fishes across a major human disturbance gradient

Journal of Animal Ecology, EarlyView.
Our research leverages a natural, ecosystem‐scale experiment and cutting‐edge molecular isotope approaches to reveal that coral reef food web structure and energy flow can remain consistent across a gradient of human disturbance. Abstract Habitat degradation and overexploitation are key drivers of biodiversity loss globally.
Matthew D. Ramirez, Kelton W. McMahon, Neil Rooney, Rana W. El‐Sabaawi, Julia K. Baum   +4 more
wiley   +1 more source