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Agent Lila Black is a cyborg operative for Earth Security, six years after the quantum bomb fractured reality and allowed elves, fairies, demons and other magical creatures access to the Earth. Agent Black is assigned to protect the first Elven rock star, Zal, whose decision to live amongst humans and 'go native' has been met with considerable ...
Three Roads to Quantum Gravity: A New Understanding of Space, Time and the Universe is a non-fiction book by American theoretical physicist Lee Smolin. The book was initially published on May 30, 2001 by Basic Books as a part of the Science Masters series. [1] [2] [3]
Quantum gravity (QG) is a field of theoretical physics that seeks to describe gravity according to the principles of quantum mechanics.It deals with environments in which neither gravitational nor quantum effects can be ignored, [1] such as in the vicinity of black holes or similar compact astrophysical objects, as well as in the early stages of the universe moments after the Big Bang.
The book's opening chapters trace the history and evolution of quantum gravity. Starting with pre-socratic philosopher Democritus through to the ideas of Sir Isaac Newton and, eventually, Albert Einstein, Rovelli puts forward a theory that quantum gravity brings great unity to the universe. Rovelli then states that space and time, waves and ...
In his 2004 book, Quantum Gravity, Rovelli developed a formulation of classical and quantum mechanics that does not make explicit reference to the notion of time. The first step towards a theory of quantum gravity without a time variable is described by Wheeler–DeWitt equation. The timeless formalism is used to describe the world in the ...
Keeping It Real marks the beginning of a series, the Quantum Gravity Books. On 27 July 2008, she spoke on BBC Radio 3 about Doctor Who and various other science fiction shows for 25 minutes during the interval of the Doctor Who Prom. Robson was announced in November 2008 as the guest of honour at the following year's Novacon.
In the second part, The World without Time, Rovelli writes that events constitute the universe instead of particles, and introduces the concept of quanta of time in loop quantum gravity. The final section, The Sources of Time, proposes that the apparent flow of time is due to the inability to observe all the microscopic details of the world. [4]
The book was criticized by physicist Joseph Polchinski [12] and other string theorists. In his earlier book Three Roads to Quantum Gravity (2002), Smolin stated that loop quantum gravity and string theory were essentially the same concept seen from different perspectives. In that book, he also favored the holographic principle.
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