So it was better to think of formulations which could explain the creation of matter without violating the law of conservation of matter...For that w… - Jayant Vishnu Narlikar

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So it was better to think of formulations which could explain the creation of matter without violating the law of conservation of matter...For that we used what is called as negative energy, which at that time was considered unrealistic. There was a good example of negative energy, mainly Newtonian gravity. Newtonian gravity is a negative energy system because gravitational potential energy is negative and we i.e, Fred Hoyle and me, worked out a fairly consistent method of describing this whole thing. Today what people call phantom fields, an idea which is catching up with people trying to explain some problems of the big-bang, these phantom fields are what we had proposed way back in the 1960’s.