The article and some of the discussion there is interesting. 2) if a viable quantum theory of gravity is eventually found, then one must prove that it stays immune to classicalization via decoherence and dissipation on macroscopic to cosmic scales. Let me know if you guys are convinced with this argument. 2) There is nothing inconsistent in the above scenario with decoherence. Yes, but I mean we should perhaps not necessarily put too much on the plate eiter. : although we don’t really know for sure, it is thought that quantum gravity does have associated particles called gravitons. We do have mathematics behind our words, and the math helps us make precise predictions that allow us to compare our ideas with observations and experiments. And since the dimensionality of energy can be expressed as pressure x volume and space has a positive volume, how can positive vacuum energy possibly have a negative pressure? but not gravity because gravitons should have 0 mass and spin 2, so Higgs boson is not a graviton but something else.
For energy to repel, people flip a sign. Pingback: Adding to the Naturalness Article | Of Particular Significance. This seems similar to the ‘Coastline Problem’ in which the apparent length of a coastline approaches infinity as your measuring-stick’s length approaches zero – the coast’s length is whatever you want it to be, determined by your choice of length of the measuring-stick. You somehow detonate it whereupon the C4 turns into gas, the gas expands, and the system reaches an equilibrium whereby the gas pressure is balanced by the tension (=negative pressure) in the balloon skin.
From what I found, the answer to this is not so straight-forward that it can be put in one sentence. Orient Aeroslim Fan Review: India’s First IoT Enabled Fan, Bladeless, Tower, Among the Latest Range of Lifestyle Fans Launched by Orient Electric, Things to Consider Before Handing Over Mobile Phone for Repair.
Interesting stuff is space and energy.
This harps back to what I said in my previous comments. The accepted cosmology theory (The Big Bang Theory) assert that the space is continually created from the beginning of the Universe.
And if seeing different phenomena at different length/energy scales is expected, then why is it suddenly unexpected that physics at the planck scale don’t match up with physics at the cosmological scale?
An analogy: there’s air pressure inside a house, but it doesn’t cause the house to explode as long as there’s equal air pressure outside the house. So perhaps gravity couples to but not to sqrt(). No offense! Genius that he was, Einstein saw with fully clarity the deep and unsettling implications that the developing theory of QM had for our understanding of physical reality. I’m told that there is a somewhat more complicated sense in which you *can* still treat energy/momentum as conserved, but only within a finite volume (and allowing for flow in and out, of course).
An aside: in quantum field theory, quantum fluctuations are sometimes called, or attributed to, the “appearance and disappearance of two (or more) `virtual particles‘ “. And in the cosmological constant case, or in its EFT equivalents, that results in more space with the same inherent negative pressure.
If you trust the renormalization idea, the similar calculation should be done in this case as well — start from a bare infinite cosmological constant, subtract the infinite contribution of the zero-point fluctuations, and require the result to be the finite (and small) experimentally observed value. Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. “Well, you can do this calculation, and in the Standard Model you’ll see it doesn’t work; there are way too many fermions, and there should be a huge negative energy in empty space.”
Power sages are opposite of power surges.
Btw, this is not just my own argument, see for example arXiv:1002.3966 (section IV). My PhD was in quantum optics, not the Standard Model, but I understand the basics well enough.
Tiny temperature variations or fluctuations. Whether it is on the left or right, it will undergo renormalization unless they keep the geometry classical through all scales (which is forbidden for other reasons).
FAQ An infinite Universe it is also illogical, because physical infinity has the bad habit to create paradoxes. Renormalization is, however, complicated and subtle. In this context energy is inversely proportional to distance. I think that maybe the issues are more technical than you’re willing to get into and so it’s a little like when adults try to explain why certain things when you’re a child, but they’re not willing to get into explaining sex, so they make all sort of non-explanations that only leave you more confused. Your study table lamp is flickering- do you know why? If so (or not so), why? So. Indeed you expect the emergence of the classical world at large distances (large here means a few orders of magnitude away from the Planck scale). General contact details of provider: http://edirc.repec.org/data/vfmunde.html . Physicists don’t have new gravity theories lying around that fit the known data as GR does, so you should not expect them to part ways with GR unless they are forced to by experiment. You really must be one of the best teachers ever. If you decrease the volume of vacuum with positive vacuum energy density, the energy decreases, corresponding to negative pressure.
Now, they might argue that the quantum corrections (which is actually a large sum of many contributions from different physics through many different scales) is identically zero, and then the cc is simply akin to an integration constant and can be anything you want. Cosmologists speculate about the new physics needed to produce the primordial fluctuations that formed galaxies. The problem isn’t what it would be in some imaginary world. Much obliged to you for sharing such educational and accommodating web journal.
Got this from The Higgs FAQ 2.0
“Ideas by Mr Right” is a home improvement blog curated by the team Mr Right. The fact that there are quantum fluctuations, with associated energy, is so deeply built into quantum mechanics that to declare it simply to be false requires you to explain a whole library of experimental results for which quantum mechanics gave correct predictions. It is a possibility. The puzzling part is that a negative pressure still results in an outwards push. Thank you for taking your time to send in your valued opinion to Science X editors. 4: The energy stored in empty space has no effect on ordinary objects because it’s the same everywhere, at all times. in Delhi, Noida, Gurgaon, Faridabad, Ghaziabad and Greater Noida. As an interested amateur, here’s my simplistic question…, You said ” The better your microscope (or particle accelerator), the more jitter you can detect, and the more energy you discover the jitter has.”. But I understand dark energy is measured to be smooth across the universe so that rules the above thought out.
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