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The wavelength of these oscillations is roughly given by (i) the Pauli--Villars regularization scale and (ii) the scale of non-locality.We hence dub this phenomenon gravitational Friedel oscillations.” Dr Chan’s award-winning essay discusses and tests one of the most popular versions of modified gravity, the Emergent Gravity.
The prize, assigned by the Gravity Research Foundation for the 70th time this year, awards the best and most well-written essays about gravitation, its theory, applications or effects.
The contest, which awards prizes of up to $4,000, has been won by five people who won the Nobel Prize in physics.
The research of my group at Penn State, as well as in several other collaborations with colleagues elsewhere, circles around different aspects whose common theme is their relevance for formulations of quantum gravity.
The nature of the field allows a broad range of projects, some of which focus more on mathematical aspects and others on physical applications.
In fact General Relativity has made possible to reflect scientifically about the Universe as a large self-contained theater where , framed in the most modern versions of trans-media communication.
Mobile devices and tablets show every day the transformations that have taken place in our society.Also with interviews and encounters with many real specialists in the subject matter.Their different ways to approach the gravitational framework will provide the viewers with different perspectives producing a rich global experience. Today, it is funded by Astrophysics and Cosmology Research Center of Aragon (CEFCA), Institute of Space Sciences –with the ESA pathfinder project-, Foundational Questions Institute (USA), Iles Balears University and regional founds of the One hundred years ago, a physicist was about to revolution definitely our way of understanding the Universe.When a positively charged impurity is placed inside a cold metal, the resulting charge density around that object exhibits characteristic ripples to negative values, known as Friedel oscillations.In this essay, we describe a somewhat analogous effect in (i) linearized higher-derivative gravity and (ii) linearized infinite-derivative "ghost-free" gravity: when a gravitational impurity (point particle) is placed in Minkowski vacuum, the local energy density $\rho \equiv G_\xi^\mu \xi^\nu$ (with $\xi=\partial_t$) exhibits oscillations to negative values.On the other hand, it is also a multimedia platform of contents in which it will be possible to deepen in the subjects that are treated: cosmology, relativity and, above all, gravity.Since the inception of General Relativity by Albert Einstein in 1915, GRAVITY as a research area has but growed till forming an extremely rich framework encompassing the universe as a whole.Now in its 70th year, the annual competition recognises papers describing the authors’ original research in the fields of general relativity and quantum gravity.Each year, the five best essays are selected as winning works and several outstanding essays are given an Honorable Mention.Moreover, general issues of quantum systems play a role, as well as problems specific to general relativity or, more generally, constrained systems., with a marked scientific-humanistic combined style.