1  Deepsubwavelength features of photonic skyrmions in a confined electromagnetic field with orbital angular momentum
20190416 
 Deepsubwavelength features of photonic skyrmions in a confined electromagnetic field with orbital angular momentum Deepsubwavelength features of photonic skyrmions in a confined electromagnetic field with orbital angular momentum, Published online: 15 April 2019; doi:10.1038/s4156701904877 Magnetic textures known as skyrmions have gathered much attention in recent years. It is now shown that focused vector beams can also give rise to photonic skyrmionlike structures. 

2  Emergence of the geometric phase from quantum measurement backaction
20190416 
 Emergence of the geometric phase from quantum measurement backaction Emergence of the geometric phase from quantum measurement backaction, Published online: 15 April 2019; doi:10.1038/s415670190482z Following a closed evolution in the Hilbert space, the state vector of a quantum system accumulates a geometric phase factor. A series of weak measurements reveal the origin of this in the backaction of any quantum measurement. 

3  Large and reversible myosindependent forces in rigidity sensing
20190409 
 Large and reversible myosindependent forces in rigidity sensing Large and reversible myosindependent forces in rigidity sensing, Published online: 08 April 2019; doi:10.1038/s4156701904779 Highresolution experiments attribute surprisingly large forces to the molecular motors helping a cell sense its surroundings. A twostate theory interprets the contractile properties of these motors as emergent features of their collective behaviour. 

4  Symmetryenhanced discontinuous phase transition in a twodimensional quantum magnet
20190409 
 Symmetryenhanced discontinuous phase transition in a twodimensional quantum magnet Symmetryenhanced discontinuous phase transition in a twodimensional quantum magnet, Published online: 08 April 2019; doi:10.1038/s415670190484x A phase transition often implies symmetry breaking in the system. However, an unconventional firstorder phase transition is predicted, where higherorder symmetry than that of the underlying Hamiltonian emerges exactly at the phase boundary. 

5  Wound healing coordinates actin architectures to regulate mechanical work
20190409 
 Wound healing coordinates actin architectures to regulate mechanical work Wound healing coordinates actin architectures to regulate mechanical work, Published online: 08 April 2019; doi:10.1038/s4156701904859 When a wound heals, different types of branched and bundled actin structure form, each designed to perform a specific function. Experiments and theory now suggest that the actin architecture depends on the stiffness of the cell’s surroundings. 

6  Stable coherent terahertz synchrotron radiation from controlled relativistic electron bunches
20190409 
 Stable coherent terahertz synchrotron radiation from controlled relativistic electron bunches Stable coherent terahertz synchrotron radiation from controlled relativistic electron bunches, Published online: 08 April 2019; doi:10.1038/s4156701904886 A feedback loop based on chaos control theory permits the generation of stable and coherent terahertz radiation from relativistic electron bunches in synchrotron light sources. 

7  Stronger than they look
20190409 
 Stronger than they look Stronger than they look, Published online: 08 April 2019; doi:10.1038/s415670190492x An experimental study of living cells suggests that single myosin molecules are capable of generating unusually large forces. The observation is supported by a theoretical model — and demonstrates the complexity of in vivo force generation. 

8  Thirst regulates motivated behavior through modulation of brainwide neural population dynamics
20190405 
 Physiological needs produce motivational drives, such as thirst and hunger, that regulate behaviors essential to survival. Hypothalamic neurons sense these needs and must coordinate relevant brainwide neuronal activity to produce the appropriate behavior. We studied dynamics from ~24,000 neurons in 34 brain regions during thirstmotivated choice behavior, as mice consumed water and became sated. Waterpredicting sensory cues elicited activity that rapidly spread throughout the brain of thirsty animals. These dynamics were gated by a brainwide mode of population activity that encoded motivational state. Focal optogenetic activation of hypothalamic thirstsensing neurons, after satiation, returned global activity to the presatiation state. Thus, motivational states specify initial conditions determining how a brainwide dynamical system transforms sensory input into behavioral output. 

9  Twodimensional skyrmion bags in liquid crystals and ferromagnets
20190402 
 Twodimensional skyrmion bags in liquid crystals and ferromagnets Twodimensional skyrmion bags in liquid crystals and ferromagnets, Published online: 01 April 2019; doi:10.1038/s415670190476x Structures containing multiple skyrmions inside a larger skyrmion—called skyrmion bags—are experimentally created in liquid crystals and theoretically predicted in magnetic materials. These may have applications in information storage technology. 

10  We like to share
20190402 
 We like to share We like to share, Published online: 01 April 2019; doi:10.1038/s415670190503y Nature Physics is one of 23 Springer Nature journals involved in a pilot scheme to make published papers readily available via ResearchGate. 

 