Results 131 to 140 of about 2,678 (202)

Spatiotemporal Diversification of Forest Understorey Species Reveals the Existence of Multiple Pleistocene Forest Refugia in Central Europe

Molecular Ecology, Volume 35, Issue 1, January 2026.
ABSTRACT During Pleistocene cold stages, European temperate forests were not only restricted to refugia in the southern European peninsulas. Rather, there is increasing evidence for the survival of trees also in isolated patches further north, termed ‘northern refugia’.
Camille Voisin, Philipp Kirschner, Eliška Záveská, Božo Frajman, Karl Hülber, Johannes Wessely, Wolfgang Willner, Peter Schönswetter, Pau Carnicero   +8 more
wiley   +1 more source

The Impact of Pleistocene Glacial Cycles on the Evolutionary Diversification of the Arctic‐Alpine Silene acaulis Species Complex

Molecular Ecology, Volume 35, Issue 2, January 2026.
ABSTRACT Arctic‐alpine species are highly sensitive to long‐term temperature changes and associated glacial cycles due to their occurrence in cold environments to which they are adapted and spatially restricted. Unravelling their evolutionary responses to past climatic fluctuations can provide new insights into their diversification.
Oliver Reutimann, Gwyneth Halstead‐Nussloch, Andreas Tribsch, Pablo Tejero Ibarra, Niklaus Zemp, Alex Widmer, Martin C. Fischer   +6 more
wiley   +1 more source

New constraints on axion-like dark matter using a Floquet quantum detector. [PDF]

Sci Adv, 2022
Bloch IM, Ronen G, Shaham R, Katz O, Volansky T, Katz O.   +5 more
europepmc   +1 more source

A Non-Inflationary Axion and ALP Misalignment Mechanism

Based on considerations of quantum gravity, global symmetries which lead to axions as pseudo Nambu-Goldstone bosons after low scale symmetry breaking cannot be exact at the Planck scale. Here, we show that Planck-suppressed terms which yield this symmetry breaking may provide a non-inflationary misalignment mechanism which can generate coherent ...
openaire   +2 more sources

Exploring interference effects between two ALP effective operators at the LHC

Journal of High Energy Physics
We observe that most studies of axion-like particle (ALP) production channels at the Large Hadron Collider (LHC) focus on a single type of ALP operator for each process in the effective field theory framework.
Kingman Cheung, Chih-Ting Lu, C.J. Ouseph, Priyanka Sarmah   +3 more
doaj   +1 more source

Search for topological defect dark matter with a global network of optical magnetometers. [PDF]

Nat Phys, 2021
Afach S, Buchler BC, Budker D, Dailey C, Derevianko A, Dumont V, Figueroa NL, Gerhardt I, Grujić ZD, Guo H, Hao C, Hamilton PS, Hedges M, Jackson Kimball DF, Kim D, Khamis S, Kornack T, Lebedev V, Lu ZT, Masia-Roig H, Monroy M, Padniuk M, Palm CA, Park SY, Paul KV, Penaflor A, Peng X, Pospelov M, Preston R, Pustelny S, Scholtes T, Segura PC, Semertzidis YK, Sheng D, Shin YC, Smiga JA, Stalnaker JE, Sulai I, Tandon D, Wang T, Weis A, Wickenbrock A, Wilson T, Wu T, Wurm D, Xiao W, Yang Y, Yu D, Zhang J.   +48 more
europepmc   +1 more source

Axion detection via superfluid 3He ferromagnetic phase and quantum measurement techniques

Journal of High Energy Physics
We propose to use the nuclear spin excitation in the ferromagnetic A1 phase of the superfluid 3He for the axion dark matter detection. This approach is striking in that it is sensitive to the axion-nucleon coupling, one of the most important features of ...
So Chigusa, Dan Kondo, Hitoshi Murayama, Risshin Okabe, Hiroyuki Sudo   +4 more
doaj   +1 more source

A spin-mechanical quantum chip for exploring exotic interactions. [PDF]

Proc Natl Acad Sci U S A, 2023
Wu L, Lin S, Kong X, Wang M, Zhou J, Duan CK, Huang P, Zhang L, Du J.   +8 more
europepmc   +1 more source

Froggatt-Nielsen ALP

Journal of High Energy Physics
The Froggatt-Nielsen (FN) mechanism, a prominent framework for explaining the observed flavor hierarchies, generically predicts the existence of an axion-like particle (ALP). This work examines a class of FN models based on ℤ N discrete symmetries.
Admir Greljo, Aleks Smolkovič, Alessandro Valenti   +2 more
doaj   +1 more source

Metallography for the European Copper Age: Research on the Axe-Blade of the Glacier- Mummy from the Ötztaler Alps in Tyrol [PDF]

, 2005
Gerhard Sperl
openalex   +1 more source