| | The Tibetan version described is based on Kamalashilas Stages of meditation, and is the path to shamatha (stage 10, synonymous with first jhana).
So let's get an overview:
1. 9 gradual stages to shamatha, where we begin as meditators, and with a stepwise more and more refined attentional balance (the mind still abides in the desire realm, with perhaps spikes of meditative experiences which may seem like jhana, or on the high stages acess to first jhana but without full stability) for details view: http://www.sbinstitute.com/sites/default/files/Ten%20Stages%20to%20Shamatha.pdf 2. When stage 10 is reached, it is like a threshold, where your prana-system will work quiet differently also after your first jhana session. When further and further familiarity with jhana is attained the second, third and fourth jhanas follow (where the mind abides in the form realm). Ajahn Brahm has interesting descriptions of these states in the book Mindulness Bliss and Beyond. 3. The first, second, third and fourth formless absorbtions (mind abides in the formless realm)
In short one may say that in meditative absorbtion, there are no appearances of sound, tactile sensations, or sight, but an experience of awareness which is blissful, non-conceptual and radiantly clear. You won't be aware of anything around you. It is also said you get clairvoyant powers like remembering past lives.
It is in all buddhist traditions viewed as nessecary to achieve shamatha/meditative absorption to cultivate wisdom and direct insight. In the tibetan tradition one does not traditionally however emphazise shamatha as much as in the Therevada tradition, mainly I think due to not becoming sidetracked by attaching to the bliss of shamatha, and thus forgetting about bodhichitta, thus entering the longer path to buddhahood: shravakas path of cessation. It is also said that one has not moved one hears bredth closer to budhahood if one merely have achieved shamatha and nothing else.
Traditionally tibetan teachers teach that acess to first jhana (corresponding to stage 9 on the path to shamatha) is "good enough" when it comes to calm abiding. Therevadins on the other hand follow the Buddhas words in Pali canon, where he describes not only jhana to be necessary to achieve full arhatship, but also the four formless absorptions. In the tibetan tradition It is said that shamatha is nessecary for the development of direct insight, wisdom. In the Dzogchen tradition main emphasis is on recognizing the natural state, mind essence, where it is nessecary to rely on shamatha to stabilize this state and to not being distracted.
Jhana (synonynous to shamatha, meditative absorption, full concentration etc) is a very rare feat to achieve, which very few meditators have gained (even though there may be many who think they have achieved it). My teacher Alan Wallace says that for a well-prepared meditator with a normally balanced mind, it takes about 1,5 years of continous shamatha-meditation in a strict retreat setting to have a serious chance of achieving shamatha, and that one need to progress on the 9 stages by letting go more and more. I highly recommend his book The Attention Revlolution, for anyone serious about shamatha meditation.
All the best /Erik |