The SVZ-Expansion and Beyond

Olig2 and Glial Fate in the SVZ

The nuclear protein poly(ADP-ribose) polymerase-1 (PARP-1) is activated in response to DNA nicks and thus promotes DNA repair. The addition of ADP-riboses to acidic amino acid residues modifies the chromatin structure and affects DNA transcription and repair. This week, Visochek et al. provide data indicating that neurotrophins can also trigger PARP-1 activation. Brief exposures of cultured cor...

Consciousness Expansion and Counterculture in the 1960s and Beyond

SnapShot: Adult Neurogenesis in the V-SVZ

Hydrodynamics Beyond the Gradient Expansion: Resurgence and Resummation.

Consistent formulations of relativistic viscous hydrodynamics involve short-lived modes, leading to asymptotic rather than convergent gradient expansions. In this Letter we consider the Müller-Israel-Stewart theory applied to a longitudinally expanding quark-gluon plasma system and identify hydrodynamics as a universal attractor without invoking the gradient expansion. We give strong evidence f...

K → Ππ Matrix Elements beyond the Leading-order Chiral Expansion *

We propose an approach for calculating K → ππ decays to the next-to-leading order in chiral expansion. A detailed numerical study of this approach is being performed.