Results 31 to 40 of about 27,463 (147)

Induced Gravity in Superfluid 3He [PDF]

open access: yes, 1997
The gapless fermionic excitations in superfluid 3He-A have the "relativistic" spectrum close to the gap nodes. This allowed us to model the modern cosmological scenaria of baryogenesis and magnetogenesis.
Volovik, G. E.
core   +2 more sources

Non-commutative dynamics and roton-like spectra in bosonic and fermionic condensates

open access: yes, 2004
The relation between symmetry breaking in non-commutative cut-off field theories and transitions to inhomogeneous phases in condensed matter is discussed.
Ambjorn   +45 more
core   +1 more source

What can we Learn from Quantum Convolutional Neural Networks?

open access: yesAdvanced Quantum Technologies, Volume 8, Issue 7, July 2025.
Quantum Convolutional Neural Networks have been long touted as one of the premium architectures for quantum machine learning (QML). But what exactly makes them so successful for tasks involving quantum data? This study unlocks some of these mysteries; particularly highlighting how quantum data embedding provides a basis for superior performance in ...
Chukwudubem Umeano   +3 more
wiley   +1 more source

Quantum Group based Modeling for the description of high temperature superconductivity and antiferromagnetism: Some supporting evidence

open access: yes, 2001
Following our recent conjecture to model the phenomenona of antiferromagnetism and superconductivity by quantum symmetry groups, we propose in the present note three toy models, namely, one based on SO_{q}(3) the other two constructed with the SO_{q}(4 ...
Anderson   +16 more
core   +1 more source

Compressible quantum phases from conformal field theories in 2+1 dimensions [PDF]

open access: yes, 2012
Conformal field theories (CFTs) with a globally conserved U(1) charge Q can be deformed into compressible phases by modifying their Hamiltonian, H, by a chemical potential H -> H - \mu Q.
A. L. Fetter   +3 more
core   +2 more sources

Molecular composition of dissolved organic matter from young organic‐rich hydrothermal deep‐sea sediments

open access: yesLimnology and Oceanography, Volume 70, Issue 4, Page 870-885, April 2025.
Abstract Hydrothermal transformations of dissolved organic matter (DOM) are governed by temperature and sedimentary organic carbon content, resulting in the release of hydrothermal DOM containing bioavailable compounds fueling benthic microbes. However, the temperature‐dependent molecular changes in porewater DOM from organic‐rich hydrothermal ...
Jonas Brünjes   +3 more
wiley   +1 more source

EHA2021 Virtual Congress Abstract Book

open access: yes, 2021
HemaSphere, Volume 5, Issue S2, June 2021.
wiley   +1 more source

Testing cosmological defect formation in the laboratory

open access: yes, 2001
Topological defects such as cosmic strings may have been formed at early-universe phase transitions. Direct tests of this idea are impossible, but the mechanism can be elucidated by studying analogous processes in low-temperature condensed-matter systems.
Bowick   +22 more
core   +1 more source

BEC Collapse and Dynamical Squeezing of Vacuum Fluctuations [PDF]

open access: yes, 2003
We analyze the phenomena of Bose Novae, as described by Donley et al [Nature 412, 295 (2001)], by focusing on the behavior of excitations or fluctuations above the condensate, as driven by the dynamics of the condensate (rather than the dynamics of the ...
A. Csordas   +54 more
core   +2 more sources

Ten practical guidelines for microclimate research in terrestrial ecosystems

open access: yesMethods in Ecology and Evolution, Volume 16, Issue 2, Page 269-294, February 2025.
Abstract Most biodiversity dynamics and ecosystem processes on land take place in microclimates that are decoupled from the climate as measured by standardised weather stations in open, unshaded locations. As a result, microclimate monitoring is increasingly being integrated in many studies in ecology and evolution.
Pieter De Frenne   +25 more
wiley   +1 more source

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