Science

Syndicate content Science
Science RSS feed -- current issue
Updated: 7 hours 40 min ago

Response to Comment on "Earth and Moon impact flux increased at the end of the Paleozoic"

Thu, 07/18/2019 - 20:13

Hergarten et al. interpret our results in terms of erosion and uncertain calibration, rather than requiring an increase in impact flux. Geologic constraints indicate low long-term erosion rates on stable cratons where most craters with diameters of ≥20 kilometers occur. We statistically test their proposed recalibration of the lunar crater ages and find that it is disfavored relative to our original calibration.

Building a safer CMV vector

Thu, 07/18/2019 - 17:32

Carbon catenation

Thu, 07/18/2019 - 17:32

Early suckler?

Thu, 07/18/2019 - 17:32

A "sUPR" target for pain management?

Thu, 07/18/2019 - 17:32

The genetics of sexual dimorphism

Thu, 07/18/2019 - 17:32

Pericytes put the squeeze on cognition

Thu, 07/18/2019 - 17:32

Glimpsing growing nanotubes

Thu, 07/18/2019 - 17:32

Confronting bias before it happens

Thu, 07/18/2019 - 17:32

A is for antimicrobial

Thu, 07/18/2019 - 17:32

Inhibition by misdirection

Thu, 07/18/2019 - 17:32

Body cameras and police misconduct

Thu, 07/18/2019 - 17:32

Thermal intolerance

Thu, 07/18/2019 - 17:32

Re-skilling the brain

Thu, 07/18/2019 - 17:32

String patterns in the doped Hubbard model

Thu, 07/18/2019 - 17:32

Understanding strongly correlated quantum many-body states is one of the most difficult challenges in modern physics. For example, there remain fundamental open questions on the phase diagram of the Hubbard model, which describes strongly correlated electrons in solids. In this work, we realize the Hubbard Hamiltonian and search for specific patterns within the individual images of many realizations of strongly correlated ultracold fermions in an optical lattice. Upon doping a cold-atom antiferromagnet, we find consistency with geometric strings, entities that may explain the relationship between hole motion and spin order, in both pattern-based and conventional observables. Our results demonstrate the potential for pattern recognition to provide key insights into cold-atom quantum many-body systems.

Theme by Danetsoft and Danang Probo Sayekti inspired by Maksimer