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It is not true that it does not fit quantum field models. Plenty of meaningful results have been derived from effective QFT (Hawking radiation for instance). Th

It is not true that it does not fit quantum field models. Plenty of meaningful results have been derived from effective QFT (Hawking radiation for instance). The model does break at a certain scale, but that is true for models without gravity too.

scotty79 11y ago
> Plenty of meaningful results have been derived from effective QFT (Hawking radiation for instance). You mean unobservable (yet?) predictions? > The model does break at a certain scale, but that is true for models without gravity too. That's kind of deal breaker when it comes to gravity.
- krastanov 11y ago
  >> Plenty of meaningful results have been derived from effective QFT (Hawking radiation for instance). > You mean unobservable (yet?) predictions? Unruh effect is observed in accelerators (it warms up the particles in the acceleration rings). Admittedly it has to do more with the principle of equivalence than directly with gravity, but it would be hard to find a physicist that has an issue with this. >> The model does break at a certain scale, but that is true for models without gravity too. > That's kind of deal breaker when it comes to gravity. What do you mean? All our models break at certain energy scales and of course it is a deal breaker for all of them, no matter if we are talking about the Standart Model or an Effective QFT with gravity. Yes, we do not know what happens when curvatures reach the plank scale, but there are plenty of other things that we do not know even if we do not include gravity.
  - scotty79 11y ago
    >>> The model does break at a certain scale, but that is true for models without gravity too. >> That's kind of deal breaker when it comes to gravity. > What do you mean? All our models break at certain energy scales ... I thought that by scale you meant size not energy and that theory breaks at larger distances (larger than typical distance for observable quantum effects). You can see how could I see this as a deal breaker for gravity that only over large distances is strong enough to be measurable).

scotty79 11y ago

> Plenty of meaningful results have been derived from effective QFT (Hawking radiation for instance). You mean unobservable (yet?) predictions? > The model does break at a certain scale, but that is true for models without gravity too. That's kind of deal breaker when it comes to gravity.

krastanov 11y ago
>> Plenty of meaningful results have been derived from effective QFT (Hawking radiation for instance). > You mean unobservable (yet?) predictions? Unruh effect is observed in accelerators (it warms up the particles in the acceleration rings). Admittedly it has to do more with the principle of equivalence than directly with gravity, but it would be hard to find a physicist that has an issue with this. >> The model does break at a certain scale, but that is true for models without gravity too. > That's kind of deal breaker when it comes to gravity. What do you mean? All our models break at certain energy scales and of course it is a deal breaker for all of them, no matter if we are talking about the Standart Model or an Effective QFT with gravity. Yes, we do not know what happens when curvatures reach the plank scale, but there are plenty of other things that we do not know even if we do not include gravity.
- scotty79 11y ago
  >>> The model does break at a certain scale, but that is true for models without gravity too. >> That's kind of deal breaker when it comes to gravity. > What do you mean? All our models break at certain energy scales ... I thought that by scale you meant size not energy and that theory breaks at larger distances (larger than typical distance for observable quantum effects). You can see how could I see this as a deal breaker for gravity that only over large distances is strong enough to be measurable).