One the one hand, we could say that fields are more fundamental and that particles are just excitations of the underlying fields. This accounts for some of the odd behaviours of particles (e.g. why particles of the same type are indistinguishable).
Is string theory a quantum field theory? String theory isn’t a quantum field theory.
also, Why quantum field theory is wrong? It means all these particles are desctibed as a “single letter” like electron. So quantum field theory cannot express each particle as an actual object. Unless quantum field theory can explain actual, concrete state of each particle, it is completely useless and meaningless for us, forever.
Is a magnetic field a quantum field? A central idea of quantum theory is a duality between particle-like and wave-like (or field-like) behavior. Just has electrons and protons can interact as fields, the electromagnetic field can interact as particle-like quanta we call photons.
How are fields created?
The Source of Magnetic Fields
A magnetic field can be created by running electricity through a wire. All magnetic fields are created by moving charged particles. Even the magnet on your fridge is magnetic because it contains electrons that are constantly moving around inside.
Why is string theory wrong? String theory, even in the low-energy limit, demands a much greater degree of symmetry than even this, which means that a low-energy prediction of superpartners should arise. The fact that we have discovered exactly 0 supersymmetric particles, even at LHC energies, is an enormous disappointment for string theory.
How many dimensions are there? The world as we know it has three dimensions of space—length, width and depth—and one dimension of time.
What are the 11 dimensions? The 11th dimension is a characteristic of space-time that has been proposed as a possible answer to questions that arise in superstring theory. The theory of superstrings involves the existence of nine dimensions of space and one dimension of time (a total of 10 dimensions).
Will physics ever be complete?
As long as such mysteries remain — and there are others — the work of physics will not be complete. … The aim of physics is to understand in a precise, mathematical way all manifestation of matter and energy in the universe — and we have barely started to explore this infinitude of possibilities.
Is physics the only real science? Physics is one of the most fundamental scientific disciplines, and its main goal is to understand how the universe behaves. … Physics intersects with many interdisciplinary areas of research, such as biophysics and quantum chemistry, and the boundaries of physics are not rigidly defined.
What is the quantum field for dummies?
Are quantum fields matter? But no, quantum fields do not interact with matter. Quantum fields are matter. … In it, two fields exist: the electromagnetic field and the “electron field”. These two fields continuously interact with each other, energy and momentum are transferred, and excitations are created or destroyed.
Is there a quark field?
Every stable particle (whether elementary or not) has its own field. Thus, there is one field for every type of quark. There is one field for every type of lepton (of which an electron is just one example) and also the Higgs boson.
Do quantum fields have energy?
Here’s how it works: the field exists everywhere in space, even when there are no particles present. The field is quantum in nature, which means it has a lowest-energy state that we call the zero-point energy, whose value may or may not be zero.
Do humans have a magnetic field? Today, two hundred years later, we know that the human body is indeed magnetic in the sense that the body is a source of magnetic fields, but this body magnetism is very different from that imagined by Mesmer.
Which unit is Tesla? tesla, unit of magnetic induction or magnetic flux density in the metre–kilogram–second system (SI) of physical units. One tesla equals one weber per square metre, corresponding to 104 gauss.
Do fields have energy?
In the modern framework of the quantum theory of fields, even without referring to a test particle, a field occupies space, contains energy, and its presence precludes a classical “true vacuum”.
Is Dark Matter real? Dark matter is a hypothetical form of matter thought to account for approximately 85% of the matter in the universe. Various astrophysical observations — including gravitational effects that accepted theories of gravity cannot explain unless more matter is present than can be seen — imply dark matter’s presence.
What if string theory is true?
If string theory is true, our universe has extra dimensions that lie curled up at every point around us. … And some physicists now view strings as a failed theory because it doesn’t make useful predictions about the universe.
Are wormholes real? Wormholes — shortcuts in space and time — have long been a staple of science fiction. But some scientists believe we may soon be able to prove that they are a real part of the universe—as real as the sun and the stars or you and I.
Are there parallel universes?
Parallel universes are no longer just a feature of a good sci-fi story. There are now some scientific theories that support the idea of parallel universes beyond our own. However, the multiverse theory remains one of the most controversial theories in science.
In what dimension does God live? Super strings that vibrate in the 10th dimension are what create the subatomic particles which make up our universe and all other possible universes. It is here where God resides.
What happened string theory?
Ultimately, baryonic string theory died for two reasons. First, it made predictions that disagreed with experiments. … This new theory, called quantum chromodynamics, or QCD, today remains our theory of the strong nuclear force. And as for string theory, it mostly faded into the background.
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