Results 71 to 80 of about 327,247 (251)

Tackling tangledness of cosmic strings by knot polynomial topological invariants

open access: yes, 2017
Cosmic strings in the early universe have received revived interest in recent years. In this paper, we derive these structures as topological defects from singular distributions of the quintessence field of dark energy.
Yong-Chang Huang, Xin Liu, Xinfei Li
core   +1 more source

Symbiont‐Induced HSP83 Establishes Two‐Tiered Control of Antifungal Immunity in an Invasive Beetle–Fungus Complex

open access: yesAdvanced Science, EarlyView.
In an invasive beetle–fungus complex, the mutualist Leptographium procerum induces host HSP83 and modulates Toll‐dependent antifungal immunity. HSP83 mediates two‐tiered control by associating with selected fungal recognition receptors and restraining Dorsal‐driven antimicrobial peptide transcription.
Qingtai Yang   +8 more
wiley   +1 more source

A CMB Millikan experiment with cosmic axiverse strings

open access: yesJournal of High Energy Physics, 2020
We study axion strings of hyperlight axions coupled to photons. Hyperlight axions — axions lighter than Hubble at recombination — are a generic prediction of the string axiverse.
Prateek Agrawal, Anson Hook, Junwu Huang
doaj   +1 more source

Holomorphic anomalies, fourfolds and fluxes

open access: yesJournal of High Energy Physics, 2022
We investigate holomorphic anomalies of partition functions underlying string compactifications on Calabi-Yau fourfolds with background fluxes. For elliptic fourfolds the partition functions have an alternative interpretation as elliptic genera of N = 1 ...
Seung-Joo Lee   +3 more
doaj   +1 more source

Similarity‐Enhanced Representation Learning of Non‐Canonical Amino Acids for Therapeutic Peptide Modeling

open access: yesAdvanced Science, EarlyView.
Non‐canonical amino acids (ncAAs) enhance peptide therapeutics but remain difficult to model computationally. SinCAA, a similarity‐enhanced pretraining framework, jointly optimizes contrastive learning guided by a novel conformational similarity metric with masked node reconstruction, capturing both functional relationships and chemical identity of ...
Chencheng Xu   +8 more
wiley   +1 more source

Blowup equations for refined topological strings

open access: yesJournal of High Energy Physics, 2018
Göttsche-Nakajima-Yoshioka K-theoretic blowup equations characterize the Nekrasov partition function of five dimensional N = 1 $$ \mathcal{N}=1 $$ supersymmetric gauge theories compactified on a circle, which via geometric engineering correspond to the ...
Min-xin Huang, Kaiwen Sun, Xin Wang
doaj   +1 more source

Topological defects in low-energy string gravity [PDF]

open access: yes, 1999
Cosmologists are interested in topological defects as a possible source for the primordial density perturbations which seeded structure formation through gravitational instability.
Dando, Owen Robert
core  

Nexus and Dirac lines in topological materials

open access: yes, 2015
We consider the Z2 topology of the Dirac lines, i.e., lines of band contacts, on an example of graphite. Four lines—three with topological charge N1 = 1each and one with N1 = -1—merge together near the H-point and annihilate due to summation law1 ...
Heikkilä, Tero   +2 more
core   +1 more source

An Extracellular Pore‑Targeting Peptide Defines a Designable Allosteric Site in TRPV2

open access: yesAdvanced Science, EarlyView.
Structure‐guided peptide engineering yields Depiv2, a highly potent and subtype‐selective TRPV2 inhibitor that binds to the extracellular pore and remodels it into a closed, non‐conductive state. Depiv2 suppresses pathological cardiac hypertrophy, establishing the TRPV2 outer pore as a designable interface for selective peptide modulation.
Aiqin Zhu   +7 more
wiley   +1 more source

Toda 3-Point Functions From Topological Strings

open access: yes, 2020
We consider the long-standing problem of obtaining the 3-point functions of Toda CFT.
Vladimir Mitev, Elli Pomoni
core  

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