Fine Tuning of the Universe The Next CEO of Stack OverflowHow many times do solar protons repeatedly fuse and fission before they form deuteronFine Tuned UniverseRelationship between hierarchy problem and higgs fine tuning?Definition of Fine-TuningEarliest example of naturalness/fine-tuning argumentsMultiverse explanation of fine tuning of cosmic constantsCan dimensional regularization solve the fine-tuning problem?Are the fundamental constants of nature independent?Does the Peccei-Quinn (PQ) mechanism require fine-tuning?Why does the flatness problem (of the universe) present a fine tuning problem?Bare Cosmological Constant and Fine-Tuning Problem
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Fine Tuning of the Universe
The Next CEO of Stack OverflowHow many times do solar protons repeatedly fuse and fission before they form deuteronFine Tuned UniverseRelationship between hierarchy problem and higgs fine tuning?Definition of Fine-TuningEarliest example of naturalness/fine-tuning argumentsMultiverse explanation of fine tuning of cosmic constantsCan dimensional regularization solve the fine-tuning problem?Are the fundamental constants of nature independent?Does the Peccei-Quinn (PQ) mechanism require fine-tuning?Why does the flatness problem (of the universe) present a fine tuning problem?Bare Cosmological Constant and Fine-Tuning Problem
$begingroup$
I'm an A level student looking into the fine tuning of various constants.
Physicists explain the extensive effects that would happen if these constants were to be changed/different and hence, how this affects the probability of life existing. What I fail to understand is why, if these constants were to be different, life wouldn't adapt to these changes. If gravity was stronger, then wouldn't the general muscle mass/stability of life be greater through evolution in order to withstand a greater force? Or am I looking at it from the wrong perspective? Some clarification on this would be appreciated.
physical-constants time-evolution cosmological-constant fine-tuning
asked yesterday
Samuel HunterSamuel Hunter
262
New contributor
Samuel Hunter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
I'm an A level student looking into the fine tuning of various constants.
Physicists explain the extensive effects that would happen if these constants were to be changed/different and hence, how this affects the probability of life existing. What I fail to understand is why, if these constants were to be different, life wouldn't adapt to these changes. If gravity was stronger, then wouldn't the general muscle mass/stability of life be greater through evolution in order to withstand a greater force? Or am I looking at it from the wrong perspective? Some clarification on this would be appreciated.
physical-constants time-evolution cosmological-constant fine-tuning
asked yesterday
Samuel HunterSamuel Hunter
262
New contributor
Samuel Hunter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
2
$begingroup$
It's more fundamental than that: if certain constants were different, it could prevent stars and planets from forming, much less allow liquid water to exist, and then allow for organic chemistry as we know it.
$endgroup$
– Dmitry Brant
yesterday
$begingroup$
Some related references are cited in the introduction of "Preliminary Inconclusive Hint of Evidence Against Optimal Fine Tuning of the Cosmological Constant for Maximizing the Fraction of Baryons Becoming Life" (arxiv.org/abs/1101.2444)
$endgroup$
– Chiral Anomaly
yesterday
add a comment |
$begingroup$
I'm an A level student looking into the fine tuning of various constants.
Physicists explain the extensive effects that would happen if these constants were to be changed/different and hence, how this affects the probability of life existing. What I fail to understand is why, if these constants were to be different, life wouldn't adapt to these changes. If gravity was stronger, then wouldn't the general muscle mass/stability of life be greater through evolution in order to withstand a greater force? Or am I looking at it from the wrong perspective? Some clarification on this would be appreciated.
physical-constants time-evolution cosmological-constant fine-tuning
asked yesterday
Samuel HunterSamuel Hunter
262
New contributor
Samuel Hunter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
I'm an A level student looking into the fine tuning of various constants.
Physicists explain the extensive effects that would happen if these constants were to be changed/different and hence, how this affects the probability of life existing. What I fail to understand is why, if these constants were to be different, life wouldn't adapt to these changes. If gravity was stronger, then wouldn't the general muscle mass/stability of life be greater through evolution in order to withstand a greater force? Or am I looking at it from the wrong perspective? Some clarification on this would be appreciated.
physical-constants time-evolution cosmological-constant fine-tuning
physical-constants time-evolution cosmological-constant fine-tuning
asked yesterday
Samuel HunterSamuel Hunter
262
New contributor
Samuel Hunter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked yesterday
Samuel HunterSamuel Hunter
262
New contributor
Samuel Hunter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked yesterday
Samuel HunterSamuel Hunter
262
New contributor
Samuel Hunter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked yesterday
Samuel HunterSamuel Hunter
262
asked yesterday
Samuel HunterSamuel Hunter
262
262
New contributor
Samuel Hunter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Samuel Hunter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Samuel Hunter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
2
$begingroup$
It's more fundamental than that: if certain constants were different, it could prevent stars and planets from forming, much less allow liquid water to exist, and then allow for organic chemistry as we know it.
$endgroup$
– Dmitry Brant
yesterday
$begingroup$
Some related references are cited in the introduction of "Preliminary Inconclusive Hint of Evidence Against Optimal Fine Tuning of the Cosmological Constant for Maximizing the Fraction of Baryons Becoming Life" (arxiv.org/abs/1101.2444)
$endgroup$
– Chiral Anomaly
yesterday
add a comment |
2
$begingroup$
It's more fundamental than that: if certain constants were different, it could prevent stars and planets from forming, much less allow liquid water to exist, and then allow for organic chemistry as we know it.
$endgroup$
– Dmitry Brant
yesterday
$begingroup$
Some related references are cited in the introduction of "Preliminary Inconclusive Hint of Evidence Against Optimal Fine Tuning of the Cosmological Constant for Maximizing the Fraction of Baryons Becoming Life" (arxiv.org/abs/1101.2444)
$endgroup$
– Chiral Anomaly
yesterday
2
2
$begingroup$
It's more fundamental than that: if certain constants were different, it could prevent stars and planets from forming, much less allow liquid water to exist, and then allow for organic chemistry as we know it.
$endgroup$
– Dmitry Brant
yesterday
$begingroup$
It's more fundamental than that: if certain constants were different, it could prevent stars and planets from forming, much less allow liquid water to exist, and then allow for organic chemistry as we know it.
$endgroup$
– Dmitry Brant
yesterday
$begingroup$
Some related references are cited in the introduction of "Preliminary Inconclusive Hint of Evidence Against Optimal Fine Tuning of the Cosmological Constant for Maximizing the Fraction of Baryons Becoming Life" (arxiv.org/abs/1101.2444)
$endgroup$
– Chiral Anomaly
yesterday
$begingroup$
Some related references are cited in the introduction of "Preliminary Inconclusive Hint of Evidence Against Optimal Fine Tuning of the Cosmological Constant for Maximizing the Fraction of Baryons Becoming Life" (arxiv.org/abs/1101.2444)
$endgroup$
– Chiral Anomaly
yesterday
add a comment |
1 Answer
1
active
oldest
votes
$begingroup$
The variation you are talking about here would still be considered relatively 'fine-tuned', in the following sense:
If the strength of gravity was stronger by such an amount such that the processes that govern the formation of stars, planets, complex molecules, and life were relatively unchanged (in that they still take place in a recognizable fashion), then the strength of gravity must be quite similar to what we observe. If this were the case, yes, there is no reason that life might not develop to be a bit tougher.
However, such a difference would have to be very small indeed. Arguments about fine-tuning are based on the observation that even relatively small changes to certain constants would be enough to drastically change the make-up of the universe.
For example, Paul Davies notes that if the strong force were 2% stronger than it is, hydrogen would fuse to form diprotons as opposed to helium as it would be energetically favorable. This would drastically alter structure formation in the early universe, leading to a today where planets do not even exist, let alone weak or strong animals on them. I should note here that the 2% figure quoted by Davies may not be accurate, but this is the idea at play here.
In short, the problems from fine-tuning start to occur far before life would ever develop in the first place.
answered yesterday
gabegabe
16711
$endgroup$
1
$begingroup$
also look at the triple $alpha$ process (en.wikipedia.org/wiki/Triple-alpha_process) which appears terribly fine tuned, and is the only way to make lots of carbon and oxygen, which are life's favorite elements.
$endgroup$
– JEB
yesterday
$begingroup$
The proton-proton chain does start by making a diproton (aka $^2_2mathrmHe$), which by the weak force can turn into a deuteron, but normally the diproton just falls apart instead. According to Ben's answer here the number of times a solar core proton makes a diproton before it suceeds in making a deuteron is on the order of $10^23$. So stars would have very short lifespans if the diproton were stable.
$endgroup$
– PM 2Ring
19 hours ago
add a comment |
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1 Answer
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1 Answer
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$begingroup$
The variation you are talking about here would still be considered relatively 'fine-tuned', in the following sense:
If the strength of gravity was stronger by such an amount such that the processes that govern the formation of stars, planets, complex molecules, and life were relatively unchanged (in that they still take place in a recognizable fashion), then the strength of gravity must be quite similar to what we observe. If this were the case, yes, there is no reason that life might not develop to be a bit tougher.
However, such a difference would have to be very small indeed. Arguments about fine-tuning are based on the observation that even relatively small changes to certain constants would be enough to drastically change the make-up of the universe.
For example, Paul Davies notes that if the strong force were 2% stronger than it is, hydrogen would fuse to form diprotons as opposed to helium as it would be energetically favorable. This would drastically alter structure formation in the early universe, leading to a today where planets do not even exist, let alone weak or strong animals on them. I should note here that the 2% figure quoted by Davies may not be accurate, but this is the idea at play here.
In short, the problems from fine-tuning start to occur far before life would ever develop in the first place.
answered yesterday
gabegabe
16711
$endgroup$
1
$begingroup$
also look at the triple $alpha$ process (en.wikipedia.org/wiki/Triple-alpha_process) which appears terribly fine tuned, and is the only way to make lots of carbon and oxygen, which are life's favorite elements.
$endgroup$
– JEB
yesterday
$begingroup$
The proton-proton chain does start by making a diproton (aka $^2_2mathrmHe$), which by the weak force can turn into a deuteron, but normally the diproton just falls apart instead. According to Ben's answer here the number of times a solar core proton makes a diproton before it suceeds in making a deuteron is on the order of $10^23$. So stars would have very short lifespans if the diproton were stable.
$endgroup$
– PM 2Ring
19 hours ago
add a comment |
$begingroup$
The variation you are talking about here would still be considered relatively 'fine-tuned', in the following sense:
If the strength of gravity was stronger by such an amount such that the processes that govern the formation of stars, planets, complex molecules, and life were relatively unchanged (in that they still take place in a recognizable fashion), then the strength of gravity must be quite similar to what we observe. If this were the case, yes, there is no reason that life might not develop to be a bit tougher.
However, such a difference would have to be very small indeed. Arguments about fine-tuning are based on the observation that even relatively small changes to certain constants would be enough to drastically change the make-up of the universe.
For example, Paul Davies notes that if the strong force were 2% stronger than it is, hydrogen would fuse to form diprotons as opposed to helium as it would be energetically favorable. This would drastically alter structure formation in the early universe, leading to a today where planets do not even exist, let alone weak or strong animals on them. I should note here that the 2% figure quoted by Davies may not be accurate, but this is the idea at play here.
In short, the problems from fine-tuning start to occur far before life would ever develop in the first place.
answered yesterday
gabegabe
16711
$endgroup$
1
$begingroup$
also look at the triple $alpha$ process (en.wikipedia.org/wiki/Triple-alpha_process) which appears terribly fine tuned, and is the only way to make lots of carbon and oxygen, which are life's favorite elements.
$endgroup$
– JEB
yesterday
$begingroup$
The proton-proton chain does start by making a diproton (aka $^2_2mathrmHe$), which by the weak force can turn into a deuteron, but normally the diproton just falls apart instead. According to Ben's answer here the number of times a solar core proton makes a diproton before it suceeds in making a deuteron is on the order of $10^23$. So stars would have very short lifespans if the diproton were stable.
$endgroup$
– PM 2Ring
19 hours ago
add a comment |
$begingroup$
The variation you are talking about here would still be considered relatively 'fine-tuned', in the following sense:
If the strength of gravity was stronger by such an amount such that the processes that govern the formation of stars, planets, complex molecules, and life were relatively unchanged (in that they still take place in a recognizable fashion), then the strength of gravity must be quite similar to what we observe. If this were the case, yes, there is no reason that life might not develop to be a bit tougher.
However, such a difference would have to be very small indeed. Arguments about fine-tuning are based on the observation that even relatively small changes to certain constants would be enough to drastically change the make-up of the universe.
For example, Paul Davies notes that if the strong force were 2% stronger than it is, hydrogen would fuse to form diprotons as opposed to helium as it would be energetically favorable. This would drastically alter structure formation in the early universe, leading to a today where planets do not even exist, let alone weak or strong animals on them. I should note here that the 2% figure quoted by Davies may not be accurate, but this is the idea at play here.
In short, the problems from fine-tuning start to occur far before life would ever develop in the first place.
answered yesterday
gabegabe
16711
$endgroup$
The variation you are talking about here would still be considered relatively 'fine-tuned', in the following sense:
If the strength of gravity was stronger by such an amount such that the processes that govern the formation of stars, planets, complex molecules, and life were relatively unchanged (in that they still take place in a recognizable fashion), then the strength of gravity must be quite similar to what we observe. If this were the case, yes, there is no reason that life might not develop to be a bit tougher.
However, such a difference would have to be very small indeed. Arguments about fine-tuning are based on the observation that even relatively small changes to certain constants would be enough to drastically change the make-up of the universe.
For example, Paul Davies notes that if the strong force were 2% stronger than it is, hydrogen would fuse to form diprotons as opposed to helium as it would be energetically favorable. This would drastically alter structure formation in the early universe, leading to a today where planets do not even exist, let alone weak or strong animals on them. I should note here that the 2% figure quoted by Davies may not be accurate, but this is the idea at play here.
In short, the problems from fine-tuning start to occur far before life would ever develop in the first place.
answered yesterday
gabegabe
16711
edited yesterday
answered yesterday
gabegabe
16711
answered yesterday
gabegabe
16711
answered yesterday
gabegabe
16711
16711
1
$begingroup$
also look at the triple $alpha$ process (en.wikipedia.org/wiki/Triple-alpha_process) which appears terribly fine tuned, and is the only way to make lots of carbon and oxygen, which are life's favorite elements.
$endgroup$
– JEB
yesterday
$begingroup$
The proton-proton chain does start by making a diproton (aka $^2_2mathrmHe$), which by the weak force can turn into a deuteron, but normally the diproton just falls apart instead. According to Ben's answer here the number of times a solar core proton makes a diproton before it suceeds in making a deuteron is on the order of $10^23$. So stars would have very short lifespans if the diproton were stable.
$endgroup$
– PM 2Ring
19 hours ago
add a comment |
1
$begingroup$
also look at the triple $alpha$ process (en.wikipedia.org/wiki/Triple-alpha_process) which appears terribly fine tuned, and is the only way to make lots of carbon and oxygen, which are life's favorite elements.
$endgroup$
– JEB
yesterday
$begingroup$
The proton-proton chain does start by making a diproton (aka $^2_2mathrmHe$), which by the weak force can turn into a deuteron, but normally the diproton just falls apart instead. According to Ben's answer here the number of times a solar core proton makes a diproton before it suceeds in making a deuteron is on the order of $10^23$. So stars would have very short lifespans if the diproton were stable.
$endgroup$
– PM 2Ring
19 hours ago
1
1
$begingroup$
also look at the triple $alpha$ process (en.wikipedia.org/wiki/Triple-alpha_process) which appears terribly fine tuned, and is the only way to make lots of carbon and oxygen, which are life's favorite elements.
$endgroup$
– JEB
yesterday
$begingroup$
also look at the triple $alpha$ process (en.wikipedia.org/wiki/Triple-alpha_process) which appears terribly fine tuned, and is the only way to make lots of carbon and oxygen, which are life's favorite elements.
$endgroup$
– JEB
yesterday
$begingroup$
The proton-proton chain does start by making a diproton (aka $^2_2mathrmHe$), which by the weak force can turn into a deuteron, but normally the diproton just falls apart instead. According to Ben's answer here the number of times a solar core proton makes a diproton before it suceeds in making a deuteron is on the order of $10^23$. So stars would have very short lifespans if the diproton were stable.
$endgroup$
– PM 2Ring
19 hours ago
$begingroup$
The proton-proton chain does start by making a diproton (aka $^2_2mathrmHe$), which by the weak force can turn into a deuteron, but normally the diproton just falls apart instead. According to Ben's answer here the number of times a solar core proton makes a diproton before it suceeds in making a deuteron is on the order of $10^23$. So stars would have very short lifespans if the diproton were stable.
$endgroup$
– PM 2Ring
19 hours ago
add a comment |
Samuel Hunter is a new contributor. Be nice, and check out our Code of Conduct.
Samuel Hunter is a new contributor. Be nice, and check out our Code of Conduct.
Samuel Hunter is a new contributor. Be nice, and check out our Code of Conduct.
Samuel Hunter is a new contributor. Be nice, and check out our Code of Conduct.
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$begingroup$
It's more fundamental than that: if certain constants were different, it could prevent stars and planets from forming, much less allow liquid water to exist, and then allow for organic chemistry as we know it.
$endgroup$
– Dmitry Brant
yesterday
$begingroup$
Some related references are cited in the introduction of "Preliminary Inconclusive Hint of Evidence Against Optimal Fine Tuning of the Cosmological Constant for Maximizing the Fraction of Baryons Becoming Life" (arxiv.org/abs/1101.2444)
$endgroup$
– Chiral Anomaly
yesterday