Physical Review Letters (PRL), established in 1958, is a peer reviewed, scientific journal that is published 52 times per year by the American Physical Society. According to various measurement standards, which includes the Journal Citation Reports impact factor, Physical Review Letters is considered to be a prestigious journal in the field of physics. PRL is published as a print journal, and is in electronic format, online and CD-ROM. Its focus is rapid dissemination of significant, or notable, results of fundamental research on all topics related to all fields of physics. This is accomplished by rapid publication of short reports, called "Letters". Papers are published and available electronically one article at a time. When published in such a manner, the paper is available to be cited by other work. Three editors are listed for this journal: Jack Sandweiss, George Basbas, and Reinhardt B. Schuhmann. Physical Review Letters is an internationally read physics journal, describing a diverse readership. Advances in physics, as well as cross disciplinary developments, are disseminated weekly, via this publication. Topics covered by this journal are also the explicit titles for each

### Physicists extend quantum machine learning to infinite dimensions

Physicists have developed a quantum machine learning algorithm that can handle infinite dimensions—that is, it works with continuous variables (which have an infinite number of possible values on a closed interval) instead ...

### Electron behaviour under extreme conditions described for the first time

Researchers have modelled the actions of electrons under extreme temperatures and densities, such as those found within planets and stars.

### New insight into proving math's million-dollar problem: the Riemann hypothesis (Update)

(Phys.org)—Researchers have discovered that the solutions to a famous mathematical function called the Riemann zeta function correspond to the solutions of another, different kind of function that may make it easier to ...

### Still no violation of Lorentz symmetry, despite strongest test yet

(Phys.org)—Physicists have found the strongest evidence yet for no violation of Lorentz symmetry, one of the fundamental symmetries of relativity. Lorentz symmetry states that the outcome of an experiment does not depend ...

### The most exotic fluid has an unexpectedly low viscosity

Collisions of lead nuclei in the Large Hadron Collider (LHC) take place at such great energies that quarks that are normally confined inside nucleons are released and, together with the gluons that hold them together, form ...

### Method to significantly enhance optical force

Light consists of a flow of photons. If two waveguides – cables for light – are side by side, they attract or repel each other. The interaction is due to the optical force, but the effect is usually extremely small. Physicists ...

### Friction in the vacuum?

(Phys.org)—When three physicists first discovered through their calculations that a decaying atom moving through the vacuum experiences a friction-like force, they were highly suspicious. The results seemed to go against ...

### Researchers observe dynamical quantum phase transitions in an interacting many-body system

A team of researchers from several institutions in Germany and Austria has developed a means for directly observing dynamical quantum phase transitions in an interacting many-body system. In their paper published in the journal ...

### Quantum physics offers new way to factor numbers

(Phys.org)—Any number can, in theory, be written as the product of prime numbers. For small numbers, this is easy (for example, the prime factors of 12 are 2, 2, and 3), but for large numbers, prime factorization becomes ...

### Physicists use quantum memory to demonstrate quantum secure direct communication

For the first time, physicists have experimentally demonstrated a quantum secure direct communication (QSDC) protocol combined with quantum memory, which is essential for storing and controlling the transfer of information. ...